Grindstone

Details Grindstone Grindstone

2008-09-23

2009-10-06

Snapp, Sandra (Department: 2915)

Machines not elsewhere specified

Material working, abrading, or founding machinery

Abrading

Design Patent

active

D0601598

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

REFERENCES:
patent: D278968 (1985-05-01), Farmer, Sr.
patent: D309414 (1990-07-01), Shimizu
patent: D328604 (1992-08-01), Chien
patent: D363867 (1995-11-01), Harrison et al.
patent: D447756 (2001-09-01), Wang
patent: D472565 (2003-04-01), Amamoto
patent: D505683 (2005-05-01), Pfaff
patent: D523717 (2006-06-01), Guo et al.
patent: D537698 (2007-03-01), Hasegawa
patent: D558801 (2008-01-01), Chen
patent: 2002/0197942 (2002-12-01), Jansson
patent: 2004/0038631 (2004-02-01), Chen et al.
patent: 2006/0211345 (2006-09-01), Levsen

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