Screwdriver head
Description
The broken lines illustrate a portion of the screwdriver head that forms no part of the claimed design.
Claims
The ornamental design for a screwdriver head, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
5619882 | April 15, 1997 | Godtner |
5704261 | January 6, 1998 | Strauch et al. |
6547562 | April 15, 2003 | Kumar |
7117765 | October 10, 2006 | Wallden |
7437979 | October 21, 2008 | Wang |
D600525 | September 22, 2009 | Meng |
7581470 | September 1, 2009 | Huang |
20040007095 | January 15, 2004 | Meng |
- Magna-Tip Screwdriver Bits. Downloaded Jun. 19, 2011 at http://www.brownells.com/.aspx/sid=2070/pid=501/Product/—440—0—BIT.
Patent History
Patent number: D644903
Type: Grant
Filed: Aug 6, 2010
Date of Patent: Sep 13, 2011
Inventor: Bo-Shen Chen (Dadu Township, Taichung County)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/367,324
Type: Grant
Filed: Aug 6, 2010
Date of Patent: Sep 13, 2011
Inventor: Bo-Shen Chen (Dadu Township, Taichung County)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/367,324
Classifications
Current U.S. Class:
D8/86