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Patents Granted on 1981-03-__
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberDatePatenteeTitleType
4,253,351Mar. 03, 1981H. AllenCork extractorlever cork extractors
4,253,359Mar. 03, 1981D.H. YoudenDrive System for Multiple Spindle Machine Tool metalworking power transmission
4,254,895Mar. 10, 1981E.G. CheakApparatus for automatic alignment and attachment of a doorjamb and stopspecialty woodworking machines
4,255,861Mar. 17, 1981H. Suwa, K. NakataElectrically Digital Display Micrometermicrometers
4,256,295Mar. 17, 1981E.A. EgnerAdjustable Clampclamps
GB-2,056,896Mar. 25, 1981M. OrrowImprovements in and relating to punch assembliespunch presses
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