Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
Patent History
Patent number: D641574
Type: Grant
Filed: May 29, 2010
Date of Patent: Jul 19, 2011
Inventor: Tung-Hua Su (Tainan Hsien)
Primary Examiner: Mimosa De
Application Number: 29/362,777
Type: Grant
Filed: May 29, 2010
Date of Patent: Jul 19, 2011
Inventor: Tung-Hua Su (Tainan Hsien)
Primary Examiner: Mimosa De
Application Number: 29/362,777
Classifications
Current U.S. Class:
D6/502