Screw driver

Details Screw driver Screw driver

2000-03-22

2001-04-17

Hyder, Philip S. (Department: 2912)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0440479

CLAIM:
The ornamental design for a screw driver, as shown and described.

REFERENCES:
patent: D. 334128 (1993-03-01), Gomas
patent: D. 335074 (1993-04-01), Hahn
patent: D. 338385 (1993-08-01), Shu
patent: D. 347373 (1994-05-01), Tsai
patent: D. 376528 (1996-12-01), Krapowicz
patent: D. 379750 (1997-06-01), Thompson
patent: D. 393582 (1998-04-01), Amtenbrink et al.
patent: D. 401831 (1998-12-01), Moody
patent: D. 413782 (1999-09-01), Krapowicz

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