Patent
   D577521
Priority
Apr 23 2008
Filed
Apr 23 2008
Issued
Sep 30 2008
Expiry
Sep 30 2022
Assg.orig
Entity
unknown
12
10
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
8029060, Oct 04 2006 Formway Furniture Limited Chair
8087727, Oct 04 2006 Formway Furniture Limited Chair
8613481, Oct 04 2006 Formway Furniture Limited Chair
8668265, Oct 04 2006 Formway Furniture Limited Chair
8888183, Oct 04 2006 Formway Furniture Limited Chair
D593337, Jan 12 2009 Chair
D604969, Apr 09 2008 Formway Furniture Limited Chair back component
D615784, Apr 09 2008 Formway Furniture Limited Chair back
D641574, May 29 2010 Chair backrest
D696055, May 26 2009 STEELCASE, INC Chair back
D696545, May 26 2009 STEELCASE, INC Rear surface of a chair back
D696546, May 26 2009 STEELCASE, INC Chair back
Patent Priority Assignee Title
D417792, Apr 29 1998 Klober GmbH Office chair
D456159, May 25 2000 Steelcase Development Corporation Chair
D456650, May 25 2000 Steelcase Inc Chair component
D457023, May 25 2000 Steelcase Inc Chair component
D471042, Feb 13 2002 HERMAN MILLER, INC Back for a seating structure
D471370, Feb 13 2002 HERMAN MILLER, INC Task chair
D490994, Oct 15 2002 HERMAN MILLER, INC Task chair
D494792, Oct 15 2002 HERMAN MILLER, INC Back for a seating structure
D506893, Apr 28 2004 Chair back
D544720, Apr 06 2006 Chair
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