Chair backrest

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Description

FIG. 1 is a perspective view of the chair backrest showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Claims

The ornamental design for a chair backrest, as shown and described.

Referenced Cited
U.S. Patent Documents
D456626 May 7, 2002 Su
D489191 May 4, 2004 Ma
D514831 February 14, 2006 Tsai
D540080 April 10, 2007 Su
D540580 April 17, 2007 Su
D543398 May 29, 2007 Su
D660621 May 29, 2012 Su
D660622 May 29, 2012 Su
D661137 June 5, 2012 Su
Patent History
Patent number: D683172
Type: Grant
Filed: Sep 14, 2012
Date of Patent: May 28, 2013
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/432,274
Classifications
Current U.S. Class: D6/716.4; D6/366