Three stage knife sharpener
Description
The broken lines in the drawings illustrate portions of the three stage knife sharpener that form no part of the claim.
Claims
The ornamental design for a three stage knife sharpener, as shown and described.
Patent History
Patent number: D680399
Type: Grant
Filed: Jul 18, 2012
Date of Patent: Apr 23, 2013
Assignees: Ed. Wuesthof Dreizackwerk KG (Solingen), Edgecraft Corporation (Avondale, PA)
Inventors: Bela Elek (Wilmington, DE), Bjoern Berger (Dusseldorf), Daniel D. Friel, Sr. (Greenville, DE)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/427,444
Type: Grant
Filed: Jul 18, 2012
Date of Patent: Apr 23, 2013
Assignees: Ed. Wuesthof Dreizackwerk KG (Solingen), Edgecraft Corporation (Avondale, PA)
Inventors: Bela Elek (Wilmington, DE), Bjoern Berger (Dusseldorf), Daniel D. Friel, Sr. (Greenville, DE)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/427,444
Classifications
Current U.S. Class:
D8/63