Screwdriver and removable bit assembly

Details Screwdriver and removable bit assembly Screwdriver and removable bit assembly

1992-09-28

1994-10-18

Douglas, Alan P.

Tools and hardware

Other tools and implements

Screwdriver type

Patent

active

D03515478

REFERENCES:
patent: D244745 (1977-06-01), Tsuji
patent: D244829 (1977-06-01), Lehoczky et al.
patent: D260599 (1981-09-01), Wong
patent: D261979 (1981-11-01), Smith et al.
patent: D298101 (1988-10-01), Chen
patent: D333964 (1993-03-01), Alexander

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