Leslie Hartridge Limited

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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Expired/Abandoned/Withdrawn Patents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
4714998 Fuel injection system monitoring equipmentExpiredFeb 08, 85Dec 22, 87[G01M, G06F]
4694671 Press incorporating saftey systemExpiredOct 17, 86Sep 22, 87[B23Q]
4657429 Securing meansExpiredJan 28, 86Apr 14, 87[F16D, B25G]
4651404 Machine toolExpiredMay 05, 83Mar 24, 87[B23Q]
4623278 Anti-backlash deviceExpiredApr 30, 85Nov 18, 86[F16B, F16H]
4601601 Rotary anti-backlash componentExpiredJul 06, 84Jul 22, 86[F16B, B25G]
4586845 Means for use in connecting a drive coupling to a non-splined end of a pump drive memberExpiredJan 29, 85May 06, 86[F16B, B25G]
4570839 PressExpiredDec 28, 84Feb 18, 86[B23Q, B21J]
4497201 Phase-angle checking apparatusExpiredJan 25, 83Feb 05, 85[G01M]
4453403 Volumetric metering equipmentExpiredAug 31, 82Jun 12, 84[G01F]
4362052 FlowmeterExpiredApr 30, 81Dec 07, 82[G01F]
4348894 Fuel quantity measuring apparatusExpiredJun 24, 80Sep 14, 82[G01M]
4332163 Cam box assemblyExpiredJun 24, 80Jun 01, 82[G01M]
4331033 Precision flowmeterExpiredMay 23, 80May 25, 82[G01F]

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