Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
U.S. Patent Documents
D512574 | December 13, 2005 | Tsai |
D534384 | January 2, 2007 | Su |
D540080 | April 10, 2007 | Su |
D540081 | April 10, 2007 | Su |
D540579 | April 17, 2007 | Su |
D540580 | April 17, 2007 | Su |
D543398 | May 29, 2007 | Su |
D544735 | June 19, 2007 | Su |
D553886 | October 30, 2007 | Su |
D582170 | December 9, 2008 | Chi |
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D604071 | November 17, 2009 | Su |
D641572 | July 19, 2011 | Tsai |
D660621 | May 29, 2012 | Su |
D661136 | June 5, 2012 | Su |
D673399 | January 1, 2013 | Gu |
D683574 | June 4, 2013 | Su |
D701068 | March 18, 2014 | Usumoto |
D708883 | July 15, 2014 | Tsai |
D708884 | July 15, 2014 | Hsuan-Chin |
D708885 | July 15, 2014 | Tsai |
D727075 | April 21, 2015 | Usumoto |
20120133186 | May 31, 2012 | Chen |
Patent History
Patent number: D772592
Type: Grant
Filed: Nov 1, 2015
Date of Patent: Nov 29, 2016
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Manpreet Matharu
Assistant Examiner: Keith Wilson
Application Number: 29/544,241
Type: Grant
Filed: Nov 1, 2015
Date of Patent: Nov 29, 2016
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Manpreet Matharu
Assistant Examiner: Keith Wilson
Application Number: 29/544,241
Classifications
Current U.S. Class:
D6/366