Hammer drill
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Description
Claims
The ornamental design for a hammer drill, as shown and described.
Referenced Cited
U.S. Patent Documents
D111005 | August 1938 | Sperry |
D301967 | July 4, 1989 | Sakamoto et al. |
D329794 | September 29, 1992 | Graham |
D343345 | January 18, 1994 | Ogawa et al. |
D411426 | June 22, 1999 | Morita |
D447677 | September 11, 2001 | Stirm |
D570174 | June 3, 2008 | Stirm |
D580250 | November 11, 2008 | Strim |
D603674 | November 10, 2009 | Werner |
7624815 | December 1, 2009 | Friedrich et al. |
7726413 | June 1, 2010 | Berghauser et al. |
Patent History
Patent number: D641604
Type: Grant
Filed: Feb 7, 2011
Date of Patent: Jul 19, 2011
Assignee: Black & Decker Inc. (Newark, DE)
Inventor: Michael Stirm (Oberursel)
Primary Examiner: Austin Murphy
Attorney: Kofi Schulterbrandt
Application Number: 29/384,965
Type: Grant
Filed: Feb 7, 2011
Date of Patent: Jul 19, 2011
Assignee: Black & Decker Inc. (Newark, DE)
Inventor: Michael Stirm (Oberursel)
Primary Examiner: Austin Murphy
Attorney: Kofi Schulterbrandt
Application Number: 29/384,965
Classifications
Current U.S. Class:
D8/67