USD668524SActiveUtility

Sharpener

37
Assignee: YANG CHING-SENPriority: Jan 24, 2012Filed: Jan 24, 2012Granted: Oct 9, 2012
Est. expiryJan 24, 2032(~5.5 yrs left)· nominal 20-yr term from priority
Inventors:Ching-Sen Yang
37
PatentIndex Score
4
Cited by
12
References
1
Claims

Claims

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

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