Patent
   D661137
Priority
Nov 16 2011
Filed
Nov 16 2011
Issued
Jun 05 2012
Expiry
Jun 05 2026
Assg.orig
Entity
unknown
8
14
n/a
The ornamental design for a chair backrest, as shown and described.

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.

Su, Tung-Hua

Patent Priority Assignee Title
D666032, May 03 2012 Chair backrest
D673401, May 13 2005 Humanscale Corporation Chair support structure
D683172, Sep 14 2012 Chair backrest
D683574, Aug 15 2012 Chair backrest
D709312, Oct 17 2012 Okamura Corporation Chair
D728292, Nov 12 2013 Kokuyo Furniture Co., Ltd. Chair
D793143, May 31 2016 Zhongshan Shi Songlin Furniture Co., Ltd Chair back frame
D807448, Jun 01 2015 Dyaco International Inc. Fall prevention attachment for exercise machine
Patent Priority Assignee Title
D493627, Sep 27 2002 Arm chair
D534384, Apr 07 2005 Backrest for a chair
D540080, Oct 11 2005 Chair backrest
D540081, Aug 18 2006 Chair backrest
D540579, Aug 18 2006 Chair backrest
D540580, Dec 31 2005 Chair backrest
D543398, Jun 19 2006 Chair backrest
D559571, Apr 20 2004 Vitra AG Chair
D579223, Sep 03 2007 Stoll Giroflex AG Chair
D579695, Mar 17 2008 Chair frame
D580198, Mar 17 2008 Chair back
D580199, Jul 02 2008 Chair backrest
D582170, May 16 2008 Chair
D650617, Mar 19 2010 Main frame of chairs
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