Patent
   D540580
Priority
Dec 31 2005
Filed
Dec 31 2005
Issued
Apr 17 2007
Expiry
Apr 17 2021
Assg.orig
Entity
unknown
29
13
n/a
The ornamental design for a chair backrest, as shown and described.

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.

Su, Tung-Hua

Patent Priority Assignee Title
D552857, Mar 08 2007 Chair
D553378, Mar 08 2007 Chair
D553886, Mar 25 2007 Chair backrest
D557028, Jun 16 2007 Chair
D577519, Oct 18 2007 Chair backrest
D579695, Mar 17 2008 Chair frame
D580198, Mar 17 2008 Chair back
D594681, Oct 18 2004 DAUPHIN ENTWICKLUNGS- U BETEILIGUNGS-GMBH Chair back
D600477, May 18 2009 Chair backrest
D640477, Nov 05 2008 Allseating Corporation Chair
D640478, Nov 05 2008 Allseating Corporation Chair
D641573, May 10 2010 FUH Shyan Co., Ltd.; FUH SHYAN CO , LTD Chair back frame
D646915, Dec 23 2010 Kimball International, Inc. Chair backrest
D660621, Nov 04 2011 Chair backrest
D660622, Jan 05 2012 Chair backrest
D661136, Jul 08 2010 Chair backrest
D661137, Nov 16 2011 Chair backrest
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
D687660, Jun 05 2012 Zhongshan Shi Songlin Furniture Co., Ltd; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD Chair back frame
D772592, Nov 01 2015 Chair backrest
D774345, Mar 20 2015 Zhongshan Shi Songlin Furniture Co., Ltd.; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD Chair back frame
D790895, May 01 2016 Chair backrest
D798092, Jan 09 2017 Oasyschair Co., Ltd.; OASYSCHAIR CO , LTD Backrest for a chair
D818294, Mar 07 2016 Zhongshan Shi Songlin Furniture Co., Ltd.; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD Chair back frame
D832017, Jun 13 2016 MILLERKNOLL, INC Chair component
D841340, Jun 13 2016 MILLERKNOLL, INC Suspension textile sheet
Patent Priority Assignee Title
20020190564,
20030001425,
D453079, Apr 20 2001 E CHAIR COMPANY, THE Arm chair
D456626, Jul 19 2001 Chair
D471042, Feb 13 2002 HERMAN MILLER, INC Back for a seating structure
D485097, May 24 2001 HNI TECHNOLOGIES INC Portion of a chair
D486657, Mar 13 2003 Chair
D494768, Dec 12 2003 Chair
D494792, Oct 15 2002 HERMAN MILLER, INC Back for a seating structure
D495509, Dec 12 2002 NIGHTINGALE CORP Chair
D511418, Jun 07 2004 NIGHTINGALE CORP Chair
D512843, Jun 10 2003 Nightingale Corp. Chair
D514831, Oct 02 2003 Zhejiang Himax Furniture Industry Corp., Ltd. Chair
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