Lifting jack
Description
Claims
The ornamental design for a lifting jack, as shown.
Referenced Cited
U.S. Patent Documents
| 3807694 | April 1974 | Butorac |
| D285854 | September 23, 1986 | Persson |
| D358923 | May 30, 1995 | Hawkins |
| D423750 | April 25, 2000 | Hung |
| 6086047 | July 11, 2000 | Lee |
| 6357724 | March 19, 2002 | Hung |
| D561422 | February 5, 2008 | Kuen et al. |
| D628760 | December 7, 2010 | Fox et al. |
| 20050035337 | February 17, 2005 | Hung |
| 20050092973 | May 5, 2005 | Tatsumi |
| 20080083913 | April 10, 2008 | Fang et al. |
Patent History
Patent number: D646453
Type: Grant
Filed: Dec 14, 2010
Date of Patent: Oct 4, 2011
Inventor: Haoliang Zhou (Zhejiang)
Primary Examiner: Cynthia Ramirez
Application Number: 29/380,943
Type: Grant
Filed: Dec 14, 2010
Date of Patent: Oct 4, 2011
Inventor: Haoliang Zhou (Zhejiang)
Primary Examiner: Cynthia Ramirez
Application Number: 29/380,943
Classifications
Current U.S. Class:
Jack Or Jackstand (D34/31)