Sharpener for drill bits
Latest Choon Nang Electrical Appliance Mfy., Ltd Patents:
Description
Claims
The ornamental design for a sharpener for drill bits, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
3769757 | November 1973 | Sunday, Jr. |
4016680 | April 12, 1977 | Moores et al. |
4031672 | June 28, 1977 | Moores et al. |
4742648 | May 10, 1988 | Ketteringham |
4974372 | December 4, 1990 | Chantalat |
D324224 | February 25, 1992 | Chien |
5311703 | May 17, 1994 | Ketteringham |
D356483 | March 21, 1995 | Fultz et al. |
5400546 | March 28, 1995 | Christian et al. |
5735732 | April 7, 1998 | Bernard |
6626745 | September 30, 2003 | Bernard |
7121932 | October 17, 2006 | Liao |
7172498 | February 6, 2007 | Bernard et al. |
- 1 sheet printout from google image search for drill bit sharpener.
Patent History
Patent number: D568132
Type: Grant
Filed: Mar 7, 2007
Date of Patent: May 6, 2008
Assignee: Choon Nang Electrical Appliance Mfy., Ltd (Aberdeen, Hong Kong)
Inventor: Ping Hay Heun (Hong Kong)
Primary Examiner: Philip S. Hyder
Attorney: Alix, Yale & Ristas, LLP
Application Number: 29/273,526
Type: Grant
Filed: Mar 7, 2007
Date of Patent: May 6, 2008
Assignee: Choon Nang Electrical Appliance Mfy., Ltd (Aberdeen, Hong Kong)
Inventor: Ping Hay Heun (Hong Kong)
Primary Examiner: Philip S. Hyder
Attorney: Alix, Yale & Ristas, LLP
Application Number: 29/273,526
Classifications
Current U.S. Class:
D8/63;
D8/91