|Coherent light generators patents - Monitor Patents|
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Coherent light generators May archived by USPTO category 05/09Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application. 05/28/2009 > patent applications in patent subcategories. archived by USPTO category
20090135857 - Frequency-tunable terahertz light source device: Provided is a frequency-tunable terahertz light source device. The frequency-tunable terahertz light source device satisfies a Littrow diffraction condition at a wavelength and simultaneously satisfies a Littman-Metcalf diffraction condition at another wavelength using a double diffraction grating having two grating periods. Thus, oscillations simultaneously occur at the two different wavelengths,... Agent: Rabin & Berdo, PC
20090135858 - Laser oscillation apparatus and controlling method thereof: An aspect of the present invention provides a laser oscillation apparatus in which a control circuit can be simplified to variably control a Q switch pulse width with low cost and a controlling method thereof. A laser oscillation apparatus according to an aspect of the present invention includes a laser... Agent: Foley And Lardner LLP Suite 500
20090135859 - Apparatuses and methods for stabilizing carrier-envelope phase of laser pulse by using direct locking method: Apparatus for stabilizing carrier-envelope phase (CEP) of laser pulse generated by mode locked pulsed laser based on direct locking method includes laser oscillator, interferometer, detector and double feedback circuit. The laser oscillator includes the mode locked pulsed laser generating the laser pulse. The interferometer generates laser pulses having first and... Agent: Harness, Dickey & Pierce, P.L.C
20090135860 - Cross modulation-based opto-electronic oscillator with tunable electro-optic optical whispering gallery mode resonator: Examples and implementations of photonic devices and techniques based on whispering gallery mode resonators formed of electro-optic materials to effectuate cross modulation between whispering gallery modes of different polarizations in the resonators.... Agent: Fish & Richardson, PC
20090135861 - Soi-based tunable laser: A silicon-on-insulator (SOI)-based tunable laser is formed to include the gain medium (such as a semiconductor optical amplifier) disposed within a cavity formed within the SOI substrate. A tunable wavelength reflecting element and associated phase matching element are formed on the surface of the SOI structure, with optical waveguides formed... Agent: Wendy W. Koba, Esq.
20090135862 - Solid laser apparatus excited by a semiconductor laser: Single mode oscillation at a wavelength of about 1064.4 nm is enabled with no use of an etalon installed in an optical resonator by providing one of two ends of a Nd:YAG element, which acts as one end of the optical resonator, with an HR coating arranged for the wavelength... Agent: Jordan And Hamburg LLP
20090135863 - Programmable laser device and method for controlling the same: A programmable laser trigger device and the method for controlling the same are disclosed. The programmable laser trigger device comprises: an external signal module and a command executing module. The external signal module is capable of interfacing the inputs and outputs of waveform command and signals. The command executing module... Agent: Wpat, PC
20090135865 - Method for controlling power of an optical disk drive: A method for controlling laser power of an optical disk drive is provided. Firstly, a power-controlling curve of a first loop circuit is formed according to a real test. Next, two test points are selected from the power-controlling curve. Then, the voltage outputted from a second loop circuit is adjusted.... Agent: Bacon & Thomas, PLLC
20090135864 - Optical module: A cut-out portion of a ground conductor is located in a region where a header faces a flexible board from the junction of a signal pin and a signal line and faces the signal line. The size of the cut-out portion is determined so that the impedance of the signal... Agent: Leydig Voit & Mayer, Ltd
20090135866 - Optical transmission circuit: An optical transmission circuit includes a light emitting device (10) having different temperature characteristics at low temperature and high temperature (e.g., a VCSEL (Vertical Cavity Surface Emitting Laser), differential switch transistors (M1, M2) for driving the light emitting device (10), the differential switch transistors having sources connected to each other... Agent: Mcdermott Will & Emery LLP
20090135867 - Temperature compensation method for laser power of an optical disk drive: A temperature compensation method for laser power in an optical disk drive is provided. A predetermined linear-fitting power curve and a temperature-changing slope curve are previously stored in the optical disk drive. Firstly, an output of laser power is controlled according to the predetermined linear-fitting power curve to read/write data.... Agent: Bacon & Thomas, PLLC
20090135868 - Optical transmitter able to resume apc operation automatically: An optical transmitter is disclosed that provides a function to resume the APC operation automatically when the failure of the APC operation is due to the thermal runaway of the device in the APC loop. The controller included in the transmitter always monitors the bias current supplied to the LD,... Agent: Michael A. Makuch, Esq. Smith, Gambrell & Russell, LLP
20090135869 - Surface-emitting laser light source using two-dimensional photonic crystal: The present invention intends to provide a surface-emitting laser light source using a two-dimensional photonic crystal in which the efficiency of extracting light in a direction perpendicular to the surface is high. In a laser light source provided with a two-dimensional photonic crystal layer created from a plate-shaped matrix body... Agent: Oliff & Berridge, PLC
20090135870 - Light source based on simultaneous two-photon emission: A semiconductor device which produces at least 1 W/m2 two photon emission power per area, when operating at one or more temperatures greater than 20 K.... Agent: Martin D. Moynihan D/b/a Prtsi, Inc.
20090135872 - Surface emitting laser, surface emitting laser array, and image forming apparatus including surface emitting laser: A surface emitting laser that oscillates at a wavelength λ includes an upper reflector, a lower reflector, an active layer, and a spacer layer. The spacer layer is a laminated structure that includes a first semiconductor sublayer having a composition of AlxGa—−xAs (1≧x≧0) and a second semiconductor sublayer having a... Agent: Fitzpatrick Cella Harper & Scinto
20090135871 - Two-dimensional photonic crystal surface emitting laser: An objective of the present invention is to provide a laser capable of producing a radially polarized laser beam with an annular cross section. A laser oscillator 60 including an active layer 53 and two-dimensional photonic crystal 55 with circular holes 552 arranged in a square lattice pattern is provided... Agent: Oliff & Berridge, PLC
20090135873 - Process for producing gallium nitride-based compound semiconductor laser element and gallium nitride-based compound semiconductor laser element: This invention provides a process for producing a gallium nitride-based compound semiconductor laser element, characterized in that a plane inclined at not less than 0.16 degree and not more than 5.0 degrees in terms of absolute value in the direction of <1-100> in (0001) Ga plane, or a plane in... Agent: Westerman, Hattori, Daniels & Adrian, LLP
20090135874 - Electrically pumped surface emitting organic laser device with coupled microcavity: Electrically pumped surface emitting organic laser device having a multi-layer of organic materials disposed between a highly reflective microcavity mirror and a highly reflective mirror to thereby form a coupled microcavity. More specifically, the organic laser device includes a substrate; a bottom mirror over the substrate; a layer of spacer... Agent: Cohen, Pontani, Lieberman & Pavane LLP
20090135875 - Semiconductor laser and method for fabricating the same: A semiconductor laser (101) includes a first cladding layer (103), an active layer (105) and a second cladding layer (108). A window region (115) including fluorine, that is, an impurity element with higher electronegativity than nitrogen, is formed in the vicinity of a front end face (113) and a rear... Agent: Mcdermott Will & Emery LLP
20090135877 - Lighting device equipped with coaxial line laser diodes and fabrication method thereof: The present invention provides a fabrication method of coaxial line laser diodes and a coaxial lighting optical fiber which disperses and guides uniform emission of light from a coaxial line laser diode. The line coaxial laser diode can be extended at a greater length to generate more spontaneous emission photons... Agent: Frenkel & Associates
20090135876 - Surface-emitting laser and optical apparatus formed by using surface-emitting laser: A surface-emitting laser has an active layer between a first distributed Bragg reflector and a second distributed Bragg reflector. The first distributed Bragg reflector is formed so as to have a resonant mode and a first longitudinal mode different from the resonant mode included in the reflectivity stop band and... Agent: Fitzpatrick Cella Harper & Scinto
20090135878 - Semiconductor light emitting device and method for manufacturing the same: A semiconductor laser chip is joined to an AlN sub-mount in a junction-down manner. The sub-mount is joined to a package. The AlN sub-mount is joined to a stem. The direction perpendicular to the irradiation direction of a laser beam emitted from the semiconductor laser chip is the direction of... Agent: Leydig Voit & Mayer, Ltd05/21/2009 > patent applications in patent subcategories. archived by USPTO category
20090129412 - Apparatus for bonding camera module, equipment for assembling camera module having the apparatus, and method of assembling camera module using the equipment: An apparatus for bonding a camera module, equipment for assembling the camera module having the apparatus, and a method of assembling the camera module using the equipment. The apparatus include: a laser generator, which generates a laser beam, and a bonding head, which is connected to the laser generator through... Agent: Drinker Biddle & Reath LLP Attn: Patent Docket Dept.
20090129410 - Fiber laser device having excitation light source protection device: In a fiber laser device equipped with at least a pumping source, a rare-earth element doped fiber and a resonator, there is provided the fiber laser device equipped with a pumping source protecting device that is between the pumping source and the resonator, that prevents a laser light generated by... Agent: Crowell & Moring LLP Intellectual Property Group
20090129409 - Optical fiber and broadband light source: An optical fiber and a broadband light source that can generate SC light having a broader bandwidth. A broadband light source 1 is equipped with a seed light source 11 and an optical fiber 12. The seed light source 11 outputs light having a central wavelength in the wavelength range... Agent: Venable LLP
20090129411 - Optical fiber laser and exciting method using same: An optical fiber laser, according to the present invention, has an optical fiber including a core to which a rare earth element is added and a clad disposed around the core, and also has an excitation light source for emitting excitation light incident on a side of the optical fiber.... Agent: Antonelli, Terry, Stout & Kraus, LLP
20090129413 - Methods and apparatus for generating rgb laser light: A dual-cavity single longitudinal mode (SLM) laser oscillator generates a pulsed laser signal having a long pulsewidth, long coherence length, and good shot-to-shot energy stability. The laser oscillator has a first cavity between an output coupler and a rear mirror and a second cavity between the output coupler and an... Agent: Edell, Shapiro & Finnan, LLC
20090129414 - Wavelength control in phase region of semiconductor lasers: Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission... Agent: Corning Incorporated
20090129415 - Light transmitter and automatic power control circuit thereof: A light transmitter and an auto-control circuit thereof are provided. The circuit includes a driving module and a feedback module. The driving module is coupled to the feedback module and a load. The driving module provides a driving current for driving the load. The feedback module provides a bias signal... Agent: Jianq Chyun Intellectual Property Office
20090129416 - Semiconductor laser drive control apparatus: A drive signal for driving a semiconductor laser is generated on the basis of an image signal inputted in synchronism with a pixel clock. A bias signal to the semiconductor laser is generated at a timing earlier than the drive signal by a predetermined time. The bias signal is disabled... Agent: Rossi, Kimms & Mcdowell LLP.
20090129418 - Semiconductor laser device and method of manufacturing the same: A method for manufacturing a semiconductor laser device includes forming a laminate having a semiconductor layer of a first conductivity type, an active layer and a semiconductor layer of a second conductivity type. The waveguide region is formed to guide light perpendicular to the direction of width by restricting the... Agent: Morrison & Foerster LLP
20090129417 - Surface-emitting laser diode and method of manufacturing the same: A surface-emitting laser diode capable of being manufactured easily at low cost, and capable of stabilizing the polarization direction of laser light in one direction and achieving higher output is provided. A light emission section 20 in which a lower first DBR mirror layer 12, a lower second DBR mirror... Agent: Rader Fishman & Grauer PLLC
20090129419 - Vcsel array device and method for manufacturing the vcsel array device: Provided is a VCSEL array device that includes at least a first multilayer reflective film, an active layer, and a second multilayer reflective film, formed on a substrate that extends in a longitudinal direction. Plural mesa portions are formed on the substrate by selectively removing at least a portion of... Agent: Fildes & Outland, P.C.
20090129420 - High power laser diode array comprising at least one high power diode laser and laser light source comprising the same: Array comprising high power laser diode comprising laser light emitters, each defining, in a direction perpendicular to direction of propagation of an output laser beam, a fast axis and a slow axis; fast axis collimating means for collimating output laser beams in fast axis direction; and slow axis beam shaping... Agent: Renner Otto Boisselle & Sklar, LLP
20090129422 - High-volume on-wafer heterogeneous packaging of optical interconnects: An optical connector module complete with optoelectronic devices supporting integrated circuitry, and connector housing may be fabricated on a wafer level. A plurality of cavities may be formed on the backside of the wafer to accommodate an optoelectronic device. Active circuitry may be formed in a front side of the... Agent: Intel Corporation C/o Cpa Global
20090129421 - Semiconductor laser diode: In an edge emitting laser having a window region with a ridge-waveguide structure, particularly, in a short cavity type of a laser operated with a low current, there has been a problem of its operating current being increased due to current leakage of the window portion. To solve this problem,... Agent: Antonelli, Terry, Stout & Kraus, LLP
20090129423 - Centrifugal turbine blower with gas foil bearings: Disclosed is a centrifugal turbine gas blower with foil bearings for use with a fast axial flow laser. The blower utilizes variable components in order to operate at different speeds for multiple applications. In addition, a bypass load has been incorporated to avoid a surge condition. The blower utilizes foil... Agent: Ward & Olivo
20090129424 - Dendrimer laser: A distributed feedback laser having a conjugated dendrimer as the active lasing component, and a method for patterning conjugated dendrimers.... Agent: Tarolli, Sundheim, Covell & Tummino L.L.P.
20090129425 - Laser devices using gain media operating in out of phase mode: The basic gain medium enclosure for laser devices comprises two parallel lateral mirrors which geometrically define the extent of the gain medium enclosure and which allow the formation of lateral stationary sinusoidal waves.... Agent: Pyle & Piontek, LLC
20090129426 - Semiconductor system having a ring laser fabricated by epitaxial layer overgrowth: The present invention provides a ring laser system comprising forming an optical core by an epitaxial layer overgrowth over an intermediate layer, forming multi-quantum wells adjacent to the optical core and forming an outer structure further comprising a total internal reflector, wherein forming photons within the multi-quantum wells further comprises... Agent: Kathy Manke Avago Technologies Limited
20090129427 - Optical module: An optical module 10 has a laser light source 20, optical branching means 24 for receiving laser light from the laser light source 20, making a part of the laser light pass through the optical branching means and branching a remaining part of the laser light; a photodetecting portion 30P... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.05/14/2009 > patent applications in patent subcategories. archived by USPTO category
20090122814 - Corrosion resistant cooled acousto-optic devices: A corrosion resistant fluid cooled acousto-optic (AO) device includes an AO interaction medium and a piezoelectric transducer affixed to the AO medium. A cooling arrangement is thermally coupled to the AO medium and includes a first material, and at least one cooling conduit in thermal contact within the first material... Agent: Darby & Darby P.C.
20090122815 - Resonant fabry-perot semiconductor saturable absorbers and two photon absorption power limiters: An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw modelocked. By using... Agent: Knobbe Martens Olson & Bear LLP
20090122816 - Rapidly and electronically broadly tunable ir laser source: A laser source producing rapidly tunable emission in the infrared part of the electromagnetic spectrum is disclosed. The source incorporates a Cr2+ laser and an electrically operated tuning element to enable rapid switching of emission wavelength. The use of the source in conjunction with frequency converters, in particular optical parametric... Agent: Mcdermott Will & Emery LLP
20090122817 - Variable-wavelength filter and variable-wavelength laser: Only the light at an overlapping wavelength of the transmission characteristics of at least two wavelength selecting filters is looped, and at least one of the wavelength selecting filters varies a selected wavelength. Since a loss due to the optical filters is small and there is not a loss caused... Agent: Sughrue Mion, PLLC
20090122818 - Electronic selectable two-color solid state laser: An electronic selectable, two color solid state laser comprising a laser diode pump and a plurality of discrete optical elements disposed serially and sharing a common optical axis. The optical components include a laser rod of gain material having a laser emission wavelength, a polarizer cube, a means for compensating... Agent: Department Of The Army Cecom Legal Office, Fort Belvoir
20090122819 - Laser pulse shaping system: A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and a spectrometer. Still another aspect of the present invention uses a laser... Agent: Harness, Dickey & Pierce, P.L.C
20090122820 - Method of driving a laser diode: A method of driving a block of diodes having low impedance by high power pulses. A high power signal is fed through an impedance-transforming device to a block of diodes. The block of diodes includes at least one laser diode. The impedance-transforming device is one of a group of transformer... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw
20090122821 - Solid state laser with beam path conditioning: A solid state laser system having at least one gas injector is disclosed. The gas injector may be configured to so as cause gas flow in a path of the laser beam in order to mitigate distortion of the laser beam due to optical path difference. Each gas injector may... Agent: Haynes And Boone, LLPIPSection
20090122822 - Semiconductor device having trench extending perpendicularly to cleaved plane and manufacturing method of the same: A method for manufacturing a semiconductor device includes setting cut lines in parallel to a normal direction of a (1-100) plane orthogonal to the principal plane and in parallel to a normal direction of a (11-20) plane orthogonal to the (1-100) plane; forming, along the cut line parallel to the... Agent: Rabin & Berdo, PC
20090122823 - Monolithically integrated laser diode chip having a construction as a multiple beam laser diode: A monolithically integrated laser diode chip having a construction as a multiple beam laser diode, which, on a semiconductor substrate (3) comprised of GaAs, has at least two laser stacks (4a, 4b, 4c) which are arranged one above another and which each contain an active zone (7). The active zone... Agent: Cohen, Pontani, Lieberman & Pavane LLP
20090122824 - Semiconductor laser apparatus: A semiconductor laser apparatus having a first clad layer, a first guide layer, an active layer, a second guide layer, and a second clad later formed in the order listed is disclosed. A layer serving as an optical waveguide is formed between the first clad layer and the second clad... Agent: Sonnenschein Nath & Rosenthal LLP
20090122825 - Laser system: A method/apparatus may comprise a seed laser oscillator producing an output which may comprise: a first gas discharge excimer or molecular fluorine laser chamber; a line narrowing module within a first oscillator cavity; a laser amplification stage receiving the output of the seed laser oscillator which may comprise: a ring... Agent: William C. Cray Cymer, Inc., Legal Dept.05/07/2009 > patent applications in patent subcategories. archived by USPTO category
20090116516 - Mode-locked solid-state laser apparatus: A mode-locked solid-state laser apparatus having a resonator which includes a solid-state laser medium, a saturable absorption mirror, and a negative group dispersion element therein, in which the solid-state laser medium and the saturable absorption mirror are disposed at a distance not greater than twice a Rayleigh length which is... Agent: Sughrue Mion, PLLC
20090116517 - Semiconductor laser excitation solid laser control device, semiconductor laser excitation solid laser device having the same, and an image formation device having the same: A semiconductor laser excitation solid laser control device 1A according to the present invention is a control device for stabilizing a light quantity of an output light LO of a semiconductor laser excitation solid laser 2. The control device 1A comprises: a beam splitter 11A for branching a laser light... Agent: Westerman, Hattori, Daniels & Adrian, LLP
20090116518 - Multiplexing of optical beams using reversed laser scanning: A high efficiency, low cost, nondispersive optical multiplexing arrangement for optical beams, used a technique denominated “Reverse Laser Scanning.” In the Reverse Laser Scanning operation, different laser beams angularly meet on the rotational axis of a galvanometer-mounted mirror or the like. Upon reflection from the mirror, each of the laser... Agent: Cislo & Thomas LLP
20090116519 - Scalable, reconfigurable, laser combiner: Modular electrical, mechanical and optical components allow for the building of a laser combiner system that can be used, for example, for biological research that allows different lasers to be easily added to or removed from a laser system. Each individual laser can be packaged into a module which can... Agent: Jason H. Vick Sheridan Ross, PC
20090116520 - Frequency-stabilized laser device, laser frequency stabilizing method, and laser frequency stabilizing program: A frequency-stabilized laser device comprises an actuator arranged to vary the cavity length; an actuator driver arranged to apply a voltage to the actuator for changing displacement; a temperature detector arranged to detect the temperature on the cavity; a temperature adjuster arranged to heat or cool the cavity; a cavity... Agent: Greenblum & Bernstein, P.L.C
20090116521 - Abnormality detection method for gas laser oscillator and gas laser oscillator for implementing the method: A gas laser oscillator (1), which generates a laser beam by exciting laser gas in discharge tubes (7) with a laser power supply (4) and detecting an abnormality thereof, includes a storage unit (12) for storing the relationship between the output command and the DC current of the laser power... Agent: Drinker Biddle & Reath (dc)
20090116522 - Enhanced efficiency laterally-coupled distributed feedback laser: The invention describes the method and apparatus for enhanced efficiency in a laterally-coupled distributed feedback (LC-DFB) laser. In a device featuring the effective ridge design, lateral confinement of the guided optical modes is provided by a surface etched grating, which also serves as a DFB element of the laser. Coupling... Agent: Freedman & Associates
20090116523 - Hybrid laser diode: Provided is a hybrid laser diode. The hybrid laser diode includes: a silicon layer constituting a slab waveguide; and a compound semiconductor layer disposed on the silicon layer to constitute a channel waveguide.... Agent: Townsend And Townsend And Crew, LLP
20090116524 - Single-exciton nanocrystal laser: A laser system employing amplification via a single exciton regime and to optical gain media having single exciton amplification is provided.... Agent: Los Alamos National Security, LLC
20090116525 - Optoelectronic systems providing high-power high-brightness laser light based on field coupled arrays, bars and stacks of semicondutor diode lasers: A semiconductor diode laser having a broad vertical waveguide and a broad lateral waveguide is disclosed emitting laser-light in a single vertical mode and a single lateral mode narrow beam. The vertical waveguide comprises a coupled cavity structure, wherein light, generated in the active medium placed in the first cavity... Agent: Ked & Associates, LLP
20090116526 - Semiconductor light-emitting device with a surface emitting type: A structure of an optical device with the surface emitting type and a method to form the optical device are disclosed, where the optical device is able to operate in high frequencies. The device provides a lower DBR structure, an active layer, a current injection layer, a current blocking layer,... Agent: Smith, Gambrell & Russell
20090116527 - Surface emitting laser diode including grating layer: A surface emitting laser diode includes a ring-shaped first semiconductor layer including an n-type clad layer, a ring-shaped active layer provided on the first semiconductor layer, and a ring-shaped second semiconductor layer which is provided on the active layer and includes a p-type clad layer and a grating layer including... Agent: Rabin & Berdo, PC
20090116528 - Nitride semiconductor laser device: A nitride semiconductor laser device has a multilayer structure formed by stacking a plurality of nitride semiconductor layers made of hexagonal nitride semiconductors, while the multilayer structure is provided with a waveguide structure for guiding a laser beam, the nitride semiconductor layers forming the multilayer structure are stacked in a... Agent: Harness, Dickey & Pierce, P.L.C
20090116529 - Semiconductor laser apparatus, method of manufacturing semiconductor laser apparatus, and optical pickup apparatus: A monolithic red/infrared semiconductor laser device is joined to a blue-violet semiconductor laser device. The distance between a blue-violet emission point in the blue-violet semiconductor laser device and an infrared emission point in an infrared semiconductor laser device is significantly shorter than the distance between a red emission point in... Agent: Mcdermott Will & Emery LLP
20090116530 - High power seed/amplifier laser system with beam shaping intermediate the seed and amplifier: An apparatus and method of operation for a high power broad band elongated thin beam laser annealing light source, which may comprise a gas discharge seed laser oscillator having a resonance cavity, providing a seed laser output pulse; a gas discharge amplifier laser amplifying the seed laser output pulse to... Agent: William C. Cray Cymer, Inc., Legal Dept.
20090116531 - Laser having distributed inductances: An RF excited laser assembly includes a pair of opposed electrodes, and at least one inductor. The pair of opposed electrodes defines an inter-electrode gap that provides a discharge volume for laser propagation within a gas medium. The pair of opposed electrodes define one or more discharge-free regions within a... Agent: Fish & Richardson PCPrevious industry: Multiplex communications
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