Tools and hardware – Other tools and implements – Wrench
Patent
1993-03-03
1994-12-27
Feifer, Melvin B.
Tools and hardware
Other tools and implements
Wrench
Patent
active
D03537560
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Official Gazette of the Patent Office, col. 883, No. 4, p. 1417 illustrates several socket wrench designs, Feb. 1971.
Black & Decker Catalog, p. 23, no date supplied.
Feifer Melvin B.
O-Ratchet, Inc.
Siegel Mitchell I.
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