Portable electric hammer drill

Details Portable electric hammer drill Portable electric hammer drill

1991-11-06

1994-01-04

Douglas, Alan P.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03428788

REFERENCES:
patent: D300717 (1989-04-01), Hasegawa et al.
patent: D314498 (1991-02-01), Hoshino et al.
patent: D314698 (1991-02-01), Zurwelle
patent: D325860 (1992-05-01), Fushiya et al.
Bosch catalog sheet for light electric hammers.
Hitachi catalog sheet for electric hammers.

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