Hand-powered motorless driver

Details Hand-powered motorless driver Hand-powered motorless driver

1986-10-28

1989-09-05

Dunkins, Bruce W.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

D 8 68

Patent

active

D03032043

REFERENCES:
patent: D136891 (1943-12-01), Kost
patent: D229604 (1973-02-01), LaPointe
patent: D256658 (1980-09-01), Ewig
patent: 4249617 (1981-02-01), Cox, Jr.
patent: 4519527 (1985-05-01), Klaeger
patent: 4524650 (1985-06-01), Marks
patent: 4739838 (1988-04-01), Marks

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