Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
Patent History
Patent number: D683172
Type: Grant
Filed: Sep 14, 2012
Date of Patent: May 28, 2013
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/432,274
Type: Grant
Filed: Sep 14, 2012
Date of Patent: May 28, 2013
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/432,274
Classifications
Current U.S. Class:
D6/716.4;
D6/366