Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
Patent History
Patent number: D660622
Type: Grant
Filed: Jan 5, 2012
Date of Patent: May 29, 2012
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/410,224
Type: Grant
Filed: Jan 5, 2012
Date of Patent: May 29, 2012
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/410,224
Classifications
Current U.S. Class:
D6/502;
D6/366