Spring
Description
The broken lines showing the teeth in
Claims
The ornamental design for a spring, as shown and described.
Referenced Cited
U.S. Patent Documents
3792529 | February 1974 | Goshgarian |
4408989 | October 11, 1983 | Cleary |
4592725 | June 3, 1986 | Goshgarian |
D296359 | June 21, 1988 | Dixon |
4815968 | March 28, 1989 | Keller |
4854864 | August 8, 1989 | Cleary |
5167499 | December 1, 1992 | Arndt et al. |
5312247 | May 17, 1994 | Sachdeva et al. |
D354569 | January 17, 1995 | Hilgers |
5816800 | October 6, 1998 | Brehm et al. |
7717707 | May 18, 2010 | Cope |
20030104335 | June 5, 2003 | Chung |
Patent History
Patent number: D636083
Type: Grant
Filed: Dec 8, 2009
Date of Patent: Apr 12, 2011
Inventor: Gurdev Dave Singh (Portland, OR)
Primary Examiner: Ian Simmons
Assistant Examiner: Wan Laymon
Attorney: Peter A Haas Esquire LLC
Application Number: 29/351,561
Type: Grant
Filed: Dec 8, 2009
Date of Patent: Apr 12, 2011
Inventor: Gurdev Dave Singh (Portland, OR)
Primary Examiner: Ian Simmons
Assistant Examiner: Wan Laymon
Attorney: Peter A Haas Esquire LLC
Application Number: 29/351,561
Classifications
Current U.S. Class:
Orthodontic Appliance (D24/180)