USD472565SExpiredUtility
Grindstone
Est. expiryMay 30, 2022(expired)· nominal 20-yr term from priority
Inventors:Hirofumi Amamoto
55
PatentIndex Score
12
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a grindstone, as shown and described.
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