Chair back frame
Description
Wherein the broken lines are shown for illustrative purposes only and form no part of the claimed design.
Claims
The ornamental design for a chair back frame, as shown and described.
Referenced Cited
U.S. Patent Documents
D507910 | August 2, 2005 | Bock |
6945601 | September 20, 2005 | Wu |
D510671 | October 18, 2005 | Wu |
7303232 | December 4, 2007 | Chen |
D580198 | November 11, 2008 | Wu |
D601830 | October 13, 2009 | Egger |
D641572 | July 19, 2011 | Tsai |
D645683 | September 27, 2011 | Chen |
D645684 | September 27, 2011 | Chen |
D661916 | June 19, 2012 | Chen |
D673399 | January 1, 2013 | Gu |
Patent History
Patent number: D686013
Type: Grant
Filed: Dec 23, 2011
Date of Patent: Jul 16, 2013
Assignee: Chia Chi Ya Enterprise Co., Ltd. (Tainan)
Inventor: Yun-Cheng Hsiao (Tainan)
Primary Examiner: Ricky Pham
Application Number: 29/409,481
Type: Grant
Filed: Dec 23, 2011
Date of Patent: Jul 16, 2013
Assignee: Chia Chi Ya Enterprise Co., Ltd. (Tainan)
Inventor: Yun-Cheng Hsiao (Tainan)
Primary Examiner: Ricky Pham
Application Number: 29/409,481
Classifications
Current U.S. Class:
D6/502;
D6/366