Screwdriver

Details Screwdriver Screwdriver

1987-11-30

1989-08-08

Dunkins, Bruce W.

Tools and hardware

Other tools and implements

Screwdriver type

D 8 86

Patent

active

D03026485

REFERENCES:
patent: 164638 (1875-06-01), Cowles
patent: 871154 (1907-11-01), Wood
patent: 2577193 (1951-12-01), Imse
patent: 2808087 (1957-10-01), Vaughn
patent: 4105056 (1978-08-01), Arnn
patent: 4143693 (1979-03-01), Acevedo

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