Power file

Details Power file Power file

1986-03-05

1989-07-04

Dunkins, Bruce W.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03019667

REFERENCES:
patent: D215047 (1969-08-01), Mikiya
patent: D217427 (1970-05-01), Slany
patent: D243742 (1977-03-01), House, II et al.
patent: 3530577 (1970-09-01), Franklin et al.
patent: 3619949 (1971-11-01), Welsch et al.
patent: 4128970 (1978-12-01), Sawrenko
Dynabrade advertising brochure, power hand file.

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