KEARFOTT GUIDANCE AND NAVIGATION CORPORATION, A CORP. OF DE

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5311280 Laser light length control assembly for ring laser gyroExpiredJul 21, 83May 10, 94[H01L, G01C, G01B]
4945765 Silicon micromachined accelerometerExpiredAug 31, 88Aug 07, 90[G01P]
4639231 Retainer for electrically fired getterExpiredSep 23, 85Jan 27, 87[H01S]
4610543 Electronic dither compensator for a ring laser gyroExpiredApr 03, 85Sep 09, 86[G01B]
4599803 Heading indicator and method of usingExpiredAug 15, 79Jul 15, 86[G01C]
4593576 Micro stepping driveExpiredFeb 21, 84Jun 10, 86[F16H]
4585346 Pathlength controller for three-axis ring laser gyroscope assemblyExpiredMar 17, 83Apr 29, 86[G01C]
4583079 Multiplexed tracking converterExpiredDec 14, 83Apr 15, 86[G05B]
4561780 Pathlength controller for ring laser gyroscopeExpiredApr 28, 80Dec 31, 85[G01C]
4545682 Optical gyroscopeExpiredAug 11, 83Oct 08, 85[G01C]
4536087 Dither compensator for ring laser gyroscopeExpiredJun 08, 83Aug 20, 85[G01C]
4512086 Heading indicatorExpiredFeb 09, 82Apr 23, 85[G01C]
4493997 Fiber optic sensor for shaft stateExpiredSep 01, 82Jan 15, 85[G01D]
4486845 Resolver to incremental shaft encoder converterExpiredJul 23, 82Dec 04, 84[H03K]
4477188 Monolithic three axis ring laser gyroscopeExpiredApr 16, 82Oct 16, 84[G01C]
4473297 Ring laser gyroscope utilizing phase detector for minimizing beam lock-inExpiredNov 12, 81Sep 25, 84[G01C]
4464942 Gyroscope hinge assembly with adjustable axial complianceExpiredJul 20, 81Aug 14, 84[G01C]
4464721 Digitized pickoff systemExpiredFeb 08, 82Aug 07, 84[G01P]
4461051 Apparatus for cleaning stator windingsExpiredSep 01, 82Jul 24, 84[A46B]
4460853 Gyroscope wheel dynamic braking and sequence inhibit circuitExpiredMar 24, 83Jul 17, 84[H02P]

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