Hammer drill

Details Hammer drill Hammer drill

2011-08-02

2011-08-02

Murphy, Austin (Department: 2911)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0642443

CLAIM:
The ornamental design for a hammer drill, as shown and described.

REFERENCES:
patent: D111005 (1938-08-01), Sperry
patent: D301967 (1989-07-01), Sakamoto et al.
patent: D329794 (1992-09-01), Graham
patent: D343345 (1994-01-01), Ogawa et al.
patent: D411426 (1999-06-01), Morita
patent: D447677 (2001-09-01), Stirm
patent: D570174 (2008-06-01), Stirm
patent: D580250 (2008-11-01), Strim
patent: D603674 (2009-11-01), Werner
patent: 7624815 (2009-12-01), Friedrich et al.
patent: 7726413 (2010-06-01), Berghauser et al.

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