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All Patents in class 279/79
Patents 31 - 33 of 33
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NumberDatePatenteeTitleType
2,476,762Jul. 19, 1949J.O. Olsen, J.N. PetreChuckscrewdriver mechanisms
2,596,594May 13, 1952J.N. PetreChuck Feature of Tools of the Detachably Connected Shank and Handle Typescrewdriver mechanisms
2,890,072Jun. 09, 1959F.A. Kaman, P.E. VegaRetainer for rotary power tools
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