Portable electric hammer drill

Details Portable electric hammer drill Portable electric hammer drill

1988-05-12

1991-04-09

Holtje, Nelson C.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03160203

REFERENCES:
Bosch Hammer Breakers Catalog, 5/1970, p. 3, rotary hammer #201 (catalog in D8 boxes).
Skil Roto-set Hammers catalog, 5/1973, p. 6, top item, model No. 707, (catalog in D8 boxes).
Red Head Philips anchors brochure, 10/1975, one page, model #747, far right (brochure in D8/69).
Kango Electric Hammers catalog, 10/1985, model #422 (Catalog in D8 boxes).

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