Knife sharpener
Description
Claims
The ornamental design for a knife sharpener, as shown and described.
Referenced Cited
U.S. Patent Documents
| 1352888 | September 1920 | Gallagher |
| 1381334 | June 1921 | Ranz |
| 2484335 | October 1949 | Dingerson |
| 3420123 | January 1969 | Waterman |
| D229476 | December 1973 | Farquharson |
| 3861087 | January 1975 | Martin |
| 4094106 | June 13, 1978 | Harris |
| D333081 | February 9, 1993 | Glesser |
| D363869 | November 7, 1995 | Ross |
| D389716 | January 27, 1998 | Cohen |
| D529779 | October 10, 2006 | Smith |
| D560461 | January 29, 2008 | Epstein |
| 7713112 | May 11, 2010 | Huang |
| 9033771 | May 19, 2015 | Krent |
| D799930 | October 17, 2017 | Chalfant |
| 20090183601 | July 23, 2009 | Shen |
| 20100323597 | December 23, 2010 | Friel, Sr. |
| 20140242895 | August 28, 2014 | Krent |
Patent History
Patent number: D898539
Type: Grant
Filed: Apr 28, 2020
Date of Patent: Oct 13, 2020
Assignee: JIANGYIN DIAMOND TOOLS CO., LTD. (Jiangyin, Jiangsu)
Inventor: Dongchen Huagn (Jiangsu)
Primary Examiner: Keli L Hill
Assistant Examiner: Harold E Blackwell, II
Application Number: 29/732,871
Type: Grant
Filed: Apr 28, 2020
Date of Patent: Oct 13, 2020
Assignee: JIANGYIN DIAMOND TOOLS CO., LTD. (Jiangyin, Jiangsu)
Inventor: Dongchen Huagn (Jiangsu)
Primary Examiner: Keli L Hill
Assistant Examiner: Harold E Blackwell, II
Application Number: 29/732,871
Classifications
Current U.S. Class:
D8/93;
D8/91