Sharpening block

Details Sharpening block Sharpening block

2002-03-28

2003-03-04

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

D0471072

CLAIM:
The ornamental design for a sharpening block, as shown and described.

REFERENCES:
patent: D267142 (1982-12-01), Pollard
patent: 4934539 (1990-06-01), Lu
patent: D310620 (1990-09-01), Friel
patent: D338376 (1993-08-01), Ulber
patent: 5245756 (1993-09-01), Howell et al.
patent: D382774 (1997-08-01), Cohen et al.
patent: D388304 (1997-12-01), Friel
patent: 5850784 (1998-12-01), Conner
patent: D421879 (2000-03-01), Miller et al.
patent: D433601 (2000-11-01), Ranieri

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