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All Patents in class 81/439
Patents 1 - 15 of 23
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NumberDatePatenteeTitleType
190,119May 01, 1877B.L. BuddImprovement in Screw-Driversscrewdrivers
366,439Jul. 12, 1887T. TroyReversible Screw Driverscrewdriver mechanisms
466,220Dec. 29, 1891T.H. BuffingtonScrew Driverscrewdrivers
504,757Sep. 12, 1893A. SchuermannScrewdriverscrewdriver blades
592,176Oct. 19, 1897L.S. StarrettReversible Pocket Toolscrewdrivers
686,424Nov. 12, 1901W.J. SmithScrewdriver Kitscrewdrivers
814,020Mar. 06, 1906H.A. CliffordConvertible Tool Handlescrewdriver handles
1,441,950Jan. 09, 1923H. SimonSimore Lightning Changescrewdriver mechanisms
1,689,376Oct. 30, 1928J. ZillioxMultiple Bit Toolscrewdrivers
2,148,573Feb. 28, 1939C.J. MulcayWrenchwrenches
2,158,728May 16, 1939F.W. PetersTool Handlescrewdriver handles
2,596,594May 13, 1952J.N. PetreChuck Feature of Tools of the Detachably Connected Shank and Handle Typescrewdriver mechanisms
4,644,831Feb. 24, 1987M. YangAdaptor Sleevetool holders
5,343,786Sep. 06, 1994G.A. WridtBit and Socket Combinationsocket wrenches
5,425,289Jun. 20, 1995D.J. IwinskiBung Tool
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