Screwdriver bit

Details Screwdriver bit Screwdriver bit

2008-09-02

2008-09-02

Hyder, Philip S (Department: 2915)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

29275570

CLAIM:
The ornamental design for a screwdriver bit, as shown and described.

REFERENCES:
patent: 2182568 (1939-12-01), Olson
patent: 2389129 (1945-11-01), Bishop
patent: 2859782 (1958-11-01), Cummaro
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patent: D311483 (1990-10-01), Espin
patent: 4998454 (1991-03-01), Chaconas et al.
patent: D410372 (1999-06-01), Strauch
patent: 6164171 (2000-12-01), Kaneko et al.
patent: 6253403 (2001-07-01), Veschi
patent: 6289775 (2001-09-01), Wei
patent: D455627 (2002-04-01), Song
patent: D455943 (2002-04-01), Lin
patent: D474388 (2003-05-01), Wu et al.

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