Chair back
Description
Claims
The ornamental design for a chair back, as shown and described.
Referenced Cited
U.S. Patent Documents
D456159 | April 30, 2002 | Ball et al. |
D456650 | May 7, 2002 | Ball et al. |
D457023 | May 14, 2002 | Ball et al. |
D471042 | March 4, 2003 | Schmitz et al. |
D471370 | March 11, 2003 | Schmitz et al. |
D490994 | June 8, 2004 | Schmitz et al. |
D494792 | August 24, 2004 | Schmitz et al. |
D544720 | June 19, 2007 | Berbegal Perez |
D575085 | August 19, 2008 | Su |
20060091714 | May 4, 2006 | Schmitz et al. |
20060091715 | May 4, 2006 | Schmitz et al. |
Patent History
Patent number: D580689
Type: Grant
Filed: Apr 22, 2008
Date of Patent: Nov 18, 2008
Inventor: Shu O Su (Tainan City)
Primary Examiner: Mimosa De
Attorney: Pro-Techtor Int'l Services
Application Number: 29/307,480
Type: Grant
Filed: Apr 22, 2008
Date of Patent: Nov 18, 2008
Inventor: Shu O Su (Tainan City)
Primary Examiner: Mimosa De
Attorney: Pro-Techtor Int'l Services
Application Number: 29/307,480
Classifications
Current U.S. Class:
D6/502;
D6/366