SP-COMMERCIAL FLIGHT, INC., A DE CORP.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4806940 Navigation mode selection apparatusExpiredApr 30, 86Feb 21, 89[H04B, G01S, G01C]
4803413 Magnetic isolating and pointing gimbal apparatusExpiredJul 15, 86Feb 07, 89[B64C]
4800375 Four color repetitive sequence matrix array for flat panel displaysExpiredOct 24, 86Jan 24, 89[G09G]
4791603 Dynamically reconfigurable array logicExpiredJul 18, 86Dec 13, 88[H03K, G06F]
4764764 Write-protect apparatus for bit mapped memoryExpiredNov 27, 84Aug 16, 88[G09G]
4764872 Vertical flight path and airspeed control system for aircraftExpiredJul 16, 86Aug 16, 88[B64C]
4760530 Flight management system providing minimum total costExpiredJun 17, 86Jul 26, 88[G06F, G05D]
4754180 Forceless non-contacting power transformerExpiredOct 07, 86Jun 28, 88[F16C, H01F]
4754276 System to display sawblade angle and heightExpiredDec 30, 85Jun 28, 88[G08C]
4751443 Servo simulatorExpiredJul 22, 86Jun 14, 88[G05B, B64C]
4751670 High integrity digital processor architectureExpiredMar 31, 86Jun 14, 88[G06F]
4741632 Constant torque ball bearingExpiredApr 01, 86May 03, 88[F16C]
4726039 Constant amplitude PSK modulatorExpiredMay 09, 86Feb 16, 88[H04L]
4723835 Heater control apparatus for liquid crystal display with integral heaterExpiredMar 24, 86Feb 09, 88[H05B, G02F]
4724421 Time interval to digital converter with smoothingExpiredDec 08, 86Feb 09, 88[H03M]
4716460 Display refresh memory apparatus utilizing one half frame updatingExpiredOct 08, 86Dec 29, 87[H04N]
4712047 Power on demand beam deflection system for dual mode CRT displaysExpiredJun 27, 86Dec 08, 87[H01J]
4686640 Programmable digital hysteresis circuitExpiredDec 12, 84Aug 11, 87[H04N]
4683532 Real-time software monitor and write protect controllerExpiredDec 03, 84Jul 28, 87[G06F]
4680866 Magnetic flux detector correction systemExpiredDec 19, 85Jul 21, 87[G01C]

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