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
D489191 May 4, 2004 Ma
D514832 February 14, 2006 Tsai
D534384 January 2, 2007 Su
D540080 April 10, 2007 Su
D540580 April 17, 2007 Su
D543398 May 29, 2007 Su
D579695 November 4, 2008 Wu
D580198 November 11, 2008 Wu
D650617 December 20, 2011 Chen
D660621 May 29, 2012 Su
D660622 May 29, 2012 Su
D661136 June 5, 2012 Su
D661137 June 5, 2012 Su
Patent History
Patent number: D683574
Type: Grant
Filed: Aug 15, 2012
Date of Patent: Jun 4, 2013
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/429,730
Classifications
Current U.S. Class: D6/716.4; D6/366