Tools and hardware – Other tools and implements – Wrench
Patent
1988-09-26
1991-09-03
Dunkins, Bruce W.
Tools and hardware
Other tools and implements
Wrench
Patent
active
D03195627
REFERENCES:
patent: D290581 (1987-06-01), Hughes
patent: 1288154 (1918-12-01), Palmgren
patent: 1416461 (1922-05-01), Hance
patent: 2306228 (1941-12-01), Shaw
patent: 2931660 (1960-04-01), Barwinkel
patent: 2963930 (1960-12-01), Clothier et al.
patent: 4006653 (1977-02-01), Kuntzsch
patent: 4502365 (1985-03-01), Hacker
patent: 4594036 (1986-06-01), Hogenhout
Industrial Equipment News, Apr. 1962, p. 8., Socket Wrench, Wahl Clipper Corp. Dept. IEN Sterling, Ill.
Snap-On Tools, May 1973, Cat. DA, p. 52, "D" and C, top center of page.
Dunkins Bruce W.
Gilden Leon
Hannon Monica
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