Federal Products Corporation

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5475304 Magnetoresistive linear displacement sensor, angular displacement sensor, and variable resistor using a moving domain wallExpiredOct 01, 93Dec 12, 95[H01L, G01B, G01R]
5317385 Portable extended life metrology system for measuring scale displacement with three output signals using a pulsed sourceExpiredDec 16, 92May 31, 94[G01B]
4776212 Pocket surface roughness gageExpiredJun 19, 87Oct 11, 88[G01B]
4724713 Drive system for air bearing machinesExpiredNov 01, 85Feb 16, 88[F16H]
4652148 Guide systemExpiredDec 19, 85Mar 24, 87[F16C]
4643590 Guide systemExpiredMar 15, 85Feb 17, 87[F16C]
4574625 Surface finish, displacement and contour scannerExpiredApr 12, 83Mar 11, 86[G01B]
4454762 Measurement system with remote displayExpiredJun 21, 82Jun 19, 84[G01B, G01R]
4419829 Head for bore gaugeExpiredJul 31, 81Dec 13, 83[G01B]
4419830 Bore gauge head assemblyExpiredMar 11, 82Dec 13, 83[G01B]
4289382 Measurement system for machine partsExpiredDec 28, 79Sep 15, 81[G02F]

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