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
D540579 April 17, 2007 Su
D544720 June 19, 2007 Berbegal Perez
D553886 October 30, 2007 Su
D572923 July 15, 2008 Huang
D575085 August 19, 2008 Su
D575969 September 2, 2008 Su
D577521 September 30, 2008 Su
D580689 November 18, 2008 Su
7604299 October 20, 2009 Su
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
Classifications
Current U.S. Class: D6/502