US Patent D638473 Pencil sharpener

Patent D638473 was granted and assigned to Elmer'S Products, Inc. on May, 2011 by the United States Patent and Trademark Office.

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Patent Number

Patent Inventor Names

Michael Schumacher1

Igor Zemskov1

Date of Patent

May 24, 2011

Patent Application Number

293685081

Date Filed

August 25, 2010

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