Pencil sharpener
Description
The broken lines showing features in
Claims
The ornamental design for a pencil sharpener, as shown and described.
Referenced Cited
U.S. Patent Documents
D249152 | August 29, 1978 | Macowski |
D318983 | August 13, 1991 | Unger |
5394613 | March 7, 1995 | Ku |
D357645 | April 25, 1995 | Wang |
D405830 | February 16, 1999 | Mak |
D442031 | May 15, 2001 | Perez |
D465149 | November 5, 2002 | Bennett et al. |
6637481 | October 28, 2003 | Mak et al. |
D509851 | September 20, 2005 | Huang |
D539146 | March 27, 2007 | Schroeder |
D549781 | August 28, 2007 | Lau |
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D619120 | July 6, 2010 | Nikiforov et al. |
Patent History
Patent number: D638473
Type: Grant
Filed: Aug 25, 2010
Date of Patent: May 24, 2011
Assignee: Elmer's Products, Inc. (Westerville, OH)
Inventors: Igor Zemskov (Dublin, OH), Michael Schumacher (Hilliard, OH)
Primary Examiner: Elizabeth Albert
Attorney: McNees Wallace & Nurick, LLC
Application Number: 29/368,508
Type: Grant
Filed: Aug 25, 2010
Date of Patent: May 24, 2011
Assignee: Elmer's Products, Inc. (Westerville, OH)
Inventors: Igor Zemskov (Dublin, OH), Michael Schumacher (Hilliard, OH)
Primary Examiner: Elizabeth Albert
Attorney: McNees Wallace & Nurick, LLC
Application Number: 29/368,508
Classifications
Current U.S. Class:
Pencil Sharpener (D19/73)