Grindstone

Details Grindstone Grindstone

2002-05-30

2003-04-01

Davis, Antoine Duval (Department: 2913)

Machines not elsewhere specified

Material working, abrading, or founding machinery

Abrading

Design Patent

active

D0472565

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

REFERENCES:
patent: 3707059 (1972-12-01), Burtch et al.
patent: D284969 (1986-08-01), Olovsson
patent: D324525 (1992-03-01), Baker et al.
patent: 6361412 (2002-03-01), Kalser
patent: 6428406 (2002-08-01), Katsuyama et al.
patent: 6431971 (2002-08-01), Nagafuchi

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