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Patents Granted on 1981-04-__
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
4,261,233Apr. 14, 1981J.W. KonecayRatchet Wrench of the Socket Drive Typeratchet wrenches
4,261,675Apr. 14, 1981F. ZanklMachine tool with pulsating cutting force
4,262,527Apr. 21, 1981J.A. Thompson, D.D. GroverSelf-Adjusting Engine Timing Pickup Probe
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