MAGNA-POW'R, INC., A CORPORATION OF IA

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5355769 Sequentially operated cylinders with load holding valve integrated systemExpiredJul 23, 92Oct 18, 94[F01L]
4966200 Tie bolt accumulator with safety valveExpiredJan 25, 89Oct 30, 90[F16L]
4741675 Flow control system for a hydraulic pumpExpiredAug 04, 86May 03, 88[F04B]
4392798 Gear pump or motor with low pressure bearing lubricationExpiredApr 03, 81Jul 12, 83[F04C, F03C]
4298319 Hydraulic gear pump or motor with floating wear plates, balance assembly, and unitary load bearing and alignment meansExpiredOct 29, 79Nov 03, 81[F04C, F03C]
4293291 Gear pump with improved shaft sealExpiredAug 01, 79Oct 06, 81[F16C, F04C, F16J]

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