Tools and hardware – Other tools and implements – Wrench
Patent
1986-03-24
1989-05-16
Dunkins, Bruce W.
Tools and hardware
Other tools and implements
Wrench
D 8 29
Patent
active
D03011127
REFERENCES:
patent: 1347780 (1920-07-01), Jacoby
patent: 1533784 (1925-04-01), Bellows
patent: 1597785 (1926-08-01), Grant
patent: 2421665 (1947-06-01), Umbdenstock
patent: 2515558 (1950-07-01), Kluth
Snap-On Tools Catalog 3-1979, p. 252 item Caster-Camber wrench/Hand tool catalogs.
Crabtree Ray D.
Krauter Wayne A
Burlington Northern Railroad
Dunkins Bruce W.
Heflin Clare E.
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