Screwdriver

Details Screwdriver Screwdriver

1993-07-14

1994-12-13

Douglas, Alan P.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03533093

REFERENCES:
patent: D115042 (1939-05-01), Hedgpeth
patent: D118724 (1940-01-01), Misuraca
patent: D161719 (1951-01-01), Thomson
patent: D187496 (1960-03-01), Hirata
patent: D297104 (1988-08-01), Svetlik

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