Screwdriver

Details Screwdriver Screwdriver

1998-08-31

2000-01-11

Holtje, Nelson C.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

0805

Patent

active

D04187296

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patent: 4522270 (1985-06-01), Kishi
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patent: 4912349 (1990-03-01), Chang
patent: 5251706 (1993-10-01), Evans
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