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
D493627 August 3, 2004 Ma
D514831 February 14, 2006 Tsai
D540081 April 10, 2007 Su
D540579 April 17, 2007 Su
D540580 April 17, 2007 Su
D543398 May 29, 2007 Su
D544735 June 19, 2007 Su
D557028 December 11, 2007 Su
D577519 September 30, 2008 Su
D580199 November 11, 2008 Su
D596430 July 21, 2009 Su
D596885 July 28, 2009 Su
Patent History
Patent number: D660621
Type: Grant
Filed: Nov 4, 2011
Date of Patent: May 29, 2012
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Mimosa De
Application Number: 29/405,755
Classifications
Current U.S. Class: D6/502; D6/366