Self locking trailer hitch
Description
Claims
The ornamental design of a self locking trailer hitch, as shown and described.
Referenced Cited
U.S. Patent Documents
3888517 | June 1975 | Ray |
D318038 | July 9, 1991 | Goettker |
D320777 | October 15, 1991 | Goettker |
D345954 | April 12, 1994 | Wallace et al. |
D348642 | July 12, 1994 | Wallace et al. |
D361541 | August 22, 1995 | Denny |
6581952 | June 24, 2003 | MacKarvich |
6595540 | July 22, 2003 | MacKarvich |
6957826 | October 25, 2005 | MacKarvich |
6971661 | December 6, 2005 | MacKarvich |
7131658 | November 7, 2006 | MacKarvich |
D540222 | April 10, 2007 | Goettker |
D630974 | January 18, 2011 | MacKarvich |
Patent History
Patent number: D672289
Type: Grant
Filed: Aug 8, 2011
Date of Patent: Dec 11, 2012
Inventor: Charles J. MacKarvich (Atlanta, GA)
Primary Examiner: Michael A Pratt
Attorney: Thomas/Horstemeyer, LLP
Application Number: 29/398,940
Type: Grant
Filed: Aug 8, 2011
Date of Patent: Dec 11, 2012
Inventor: Charles J. MacKarvich (Atlanta, GA)
Primary Examiner: Michael A Pratt
Attorney: Thomas/Horstemeyer, LLP
Application Number: 29/398,940
Classifications
Current U.S. Class:
Draw Element, E.g., Trailer Hitch (D12/162)