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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5091675 Flashbulb having hard glass containing emitter substancesExpiredMar 23, 90Feb 25, 92[H01J]
5091924 Apparatus for the transillumination of articles with a fan-shaped radiation beamExpiredAug 09, 90Feb 25, 92[G01N]
5065418 Apparatus for the transillumination of articles with fan-shaped radiationExpiredAug 09, 90Nov 12, 91[G01N]
5046152 Ignition circuit for a gas discharge lampExpiredMay 21, 90Sep 03, 91[H05B]
4987341 Flash lamp with metal coating on an outer end of an electrode thereofExpiredMay 07, 90Jan 22, 91[H01J]
4987584 Materials inspection system using x-ray imagingExpiredApr 03, 90Jan 22, 91[H05G]
4980548 Digital position sensor for indicating the relative position of relatively movable partsExpiredSep 25, 89Dec 25, 90[G01D]
4967081 Infrared detectorExpiredJun 15, 89Oct 30, 90[G01J, H05K]
4914298 Infrared detector with direction identification capabilityExpiredApr 01, 88Apr 03, 90[G01S]
4906834 Infrared detector circuit having a resistor series connected to the detector to limit the current across the pn junction of the FETExpiredOct 12, 88Mar 06, 90[H01J]
4896072 Flashbulb with a heat shieldExpiredFeb 03, 88Jan 23, 90[H01J]
4870670 X-ray scanner with secondary radiation detectorExpiredOct 05, 88Sep 26, 89[G01N]
4868461 Thyristor triggering deviceExpiredOct 22, 87Sep 19, 89[H05B]
4853596 Flash discharge lamp with sintered cathode memberExpiredFeb 04, 88Aug 01, 89[H01J]
4841554 X-ray scanner for inspecting articles moving therethroughExpiredFeb 29, 88Jun 20, 89[G01N]
4827189 Solder connection for an electrode of the gas discharge lamp and the method for manufactureExpiredApr 11, 88May 02, 89[H01J]
4788704 X-ray scanner & detector signal processing systemExpiredNov 17, 87Nov 29, 88[G01N, H05G]
4783794 Baggage inspection systemExpiredJul 17, 86Nov 08, 88[G01N]
4775894 Modular sensor lineExpiredOct 30, 86Oct 04, 88[H04N]
4775895 Modular image sensor structureExpiredOct 30, 86Oct 04, 88[H04N]

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