Chair castor
Description
Claims
The ornamental design for a chair castor, as shown and described.
Referenced Cited
Patent History
Patent number: D668943
Type: Grant
Filed: May 31, 2011
Date of Patent: Oct 16, 2012
Inventor: Po-Chuan Tsai (Tainan)
Primary Examiner: Robert M. Spear
Assistant Examiner: Barbara B Lohr
Attorney: Kamrath IP Lawfirm, PA
Application Number: 29/393,117
Type: Grant
Filed: May 31, 2011
Date of Patent: Oct 16, 2012
Inventor: Po-Chuan Tsai (Tainan)
Primary Examiner: Robert M. Spear
Assistant Examiner: Barbara B Lohr
Attorney: Kamrath IP Lawfirm, PA
Application Number: 29/393,117
Classifications
Current U.S. Class:
D8/375