Screwdriver bit
Description
Claims
The ornamental design for a screwdriver bit, as shown and described.
Referenced Cited
U.S. Patent Documents
2182568 | December 1939 | Olson |
2389129 | November 1945 | Bishop |
2859782 | November 1958 | Cummaro |
3913647 | October 1975 | Arnn |
D311483 | October 23, 1990 | Espin |
4998454 | March 12, 1991 | Chaconas et al. |
D410372 | June 1, 1999 | Strauch |
6164171 | December 26, 2000 | Kaneko et al. |
6253403 | July 3, 2001 | Veschi |
6289775 | September 18, 2001 | Wei |
D455627 | April 16, 2002 | Song |
D455943 | April 23, 2002 | Lin |
D474388 | May 13, 2003 | Wu et al. |
Patent History
Patent number: D576009
Type: Grant
Filed: Dec 29, 2006
Date of Patent: Sep 2, 2008
Inventor: Bernard Tanner (Calgary, AB)
Primary Examiner: Philip S Hyder
Attorney: Ryan W. Dupuis
Application Number: 29/275,570
Type: Grant
Filed: Dec 29, 2006
Date of Patent: Sep 2, 2008
Inventor: Bernard Tanner (Calgary, AB)
Primary Examiner: Philip S Hyder
Attorney: Ryan W. Dupuis
Application Number: 29/275,570
Classifications
Current U.S. Class:
D8/86