Chair backrest

The ornamental design for a chair backrest, as shown.

FIG. 1 is a perspective view of a 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.

Patent	Priority	Assignee	Title
8240771,	May 13 2004	Humanscale Corporation	Mesh chair component
D553886,	Mar 25 2007		Chair backrest
D557028,	Jun 16 2007		Chair
D572923,	Feb 07 2008		Chair
D577519,	Oct 18 2007		Chair backrest
D596430,	Mar 19 2009		Chair backrest
D596885,	May 05 2009		Chair backrest
D604071,	Jul 30 2009		Chair backrest
D609036,	Aug 17 2009	ITOKI CORPORATION	Mesh back chair
D623449,	May 13 2005	Humanscale Corporation	Mesh backrest for a chair
D660621,	Nov 04 2011		Chair backrest
D673401,	May 13 2005	Humanscale Corporation	Chair support structure
D772592,	Nov 01 2015		Chair backrest
D782238,	Apr 03 2015	Chair Meister Co., Ltd.	Chair back frame
D818294,	Mar 07 2016	Zhongshan Shi Songlin Furniture Co., Ltd.; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD	Chair back frame

Patent	Priority	Assignee	Title
D474346,	Jan 25 2001	JSJ Furniture Corporation	Chair
D489191,	Sep 27 2002		Arm chair
D493627,	Sep 27 2002		Arm chair
D507124,	Jul 13 2004		Chair
D510488,	May 19 2004		Chair
D511418,	Jun 07 2004	NIGHTINGALE CORP	Chair
D512574,	Apr 20 2004	Zhejiang Himax Furniture Industry Corp., Ltd.	Chair
D514832,	Oct 02 2003	Zhejiang Himax Furniture Industry Corp Ltd.	Chair
D516828,	Jul 02 2004	Zhejiang Himax Furniture Industry Corp. Ltd.	Chair
D527920,	Sep 27 2004	Okamura Corporation	Chair
D528811,	Sep 27 2004	Okamura Corporation	Chair
D534365,	Jun 09 2005	NIGHTINGALE CORP	Chair
D534384,	Apr 07 2005		Backrest for a chair

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