Knife sharpener

Details Knife sharpener Knife sharpener

2003-04-21

2004-03-23

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

D0487691

CLAIM:
The ornamental design for a knife sharpener, as shown.

REFERENCES:
patent: D341534 (1993-11-01), Janikowski
patent: 5291805 (1994-03-01), Byers et al.
patent: D365740 (1996-01-01), Smith
patent: D367598 (1996-03-01), Fortenberry
patent: D369081 (1996-04-01), Byers et al.
patent: D375241 (1996-11-01), Pigott
patent: D387262 (1997-12-01), Byers et al.
patent: D394596 (1998-05-01), Byers et al.
patent: D453290 (2002-02-01), Huang

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