Screwdriver head
Description
Claims
The ornamental design for a screwdriver head, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
| 173356 | February 1876 | Sloan |
| 1745310 | January 1930 | Novick |
| 2089121 | August 1937 | Hartung |
| 2161095 | June 1939 | Schaffer |
| 3578046 | May 1971 | Curran |
| D243506 | March 1, 1977 | Hess |
| D319171 | August 20, 1991 | McCord, Jr. |
| D575615 | August 26, 2008 | Araiza |
| 20090145270 | June 11, 2009 | Heesch |
| 20090229429 | September 17, 2009 | Heesch |
- Installing JE Circlips, Posted Jul. 17, 2004. Downloaded at http://forums.pelicanparts.com/911-engine-rebuilding-forum/172957- installing-je-circlips.ht... on Mar. 6, 2012.
Patent History
Patent number: D661963
Type: Grant
Filed: Nov 18, 2011
Date of Patent: Jun 19, 2012
Inventor: Chiu-Tien Huang (Changhua Hsien)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/406,853
Type: Grant
Filed: Nov 18, 2011
Date of Patent: Jun 19, 2012
Inventor: Chiu-Tien Huang (Changhua Hsien)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/406,853
Classifications
Current U.S. Class:
D8/86