Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
Patent History
Patent number: D809842
Type: Grant
Filed: Jun 22, 2017
Date of Patent: Feb 13, 2018
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/608,464
Type: Grant
Filed: Jun 22, 2017
Date of Patent: Feb 13, 2018
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/608,464
Classifications
Current U.S. Class:
D6/716.4;
D6/366