Drill

Details Drill Drill

1991-06-17

1993-03-16

Douglas, Alan P.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03339602

REFERENCES:
patent: D243652 (1977-03-01), Zurwelle et al.
patent: D279957 (1985-08-01), Akazawa et al.
patent: D303347 (1989-09-01), Somers
patent: D314498 (1991-02-01), Hoshino et al.
Hitachi (Exhibit "D").
Black & Decker (Exhibit "E").
Application Ser. No. 931451 (Exhibit "F").

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