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Grindstone

35
Assignee: YANG CHING-SENPriority: Sep 23, 2008Filed: Sep 23, 2008Granted: Oct 6, 2009
Est. expirySep 23, 2028(~2.2 yrs left)· nominal 20-yr term from priority
Inventors:Ching-Sen YangEric Liao
35
PatentIndex Score
3
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13
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for a grindstone, as shown and described.

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