Sharpener
Description
The broken lines in
Claims
The ornamental design for a sharpener, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D668524
Type: Grant
Filed: Jan 24, 2012
Date of Patent: Oct 9, 2012
Inventor: Ching-Sen Yang (Taichung)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Attorney: Pro-Techtor Int'l Services
Application Number: 29/411,569
Type: Grant
Filed: Jan 24, 2012
Date of Patent: Oct 9, 2012
Inventor: Ching-Sen Yang (Taichung)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Attorney: Pro-Techtor Int'l Services
Application Number: 29/411,569
Classifications
Current U.S. Class:
D8/93