Chair back

The ornamental design for a chair back, as shown and described.

FIG. 1 is a perspective view of a chair back showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Patent	Priority	Assignee	Title
10791842,	May 26 2008	Steelcase Inc.	Conforming back for a seating unit
D553376,	Jul 11 2006	ITOKI CORPORATION	Chair
D569672,	Apr 18 2006	Global Industries Corporation	Cushion
D572509,	Jan 25 2006	Flokk AB	Chair back
D575085,	Mar 30 2008		Chair backrest
D575969,	Jul 20 2007		Chair backrest
D576814,	Feb 22 2008	IVARS S.p.A.	Office chair
D577231,	Apr 11 2007	Global Total Office	Chair back
D577521,	Apr 23 2008		Chair backrest
D581708,	Apr 22 2008		Chair back
D586594,	Jan 25 2006	Flokk AB	Chair back
D610843,	Oct 23 2006	DAUPHIN ENTWICKLUNGS- U BETEILIGUNGS-GMBH	Backrest of a chair
D767321,	Aug 19 2015		Chair back

Patent	Priority	Assignee	Title
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D342849,	Apr 25 1991	Grosfillex Sarl	Chair back
D346279,	Jun 15 1992	HERMAN MILLER, INC , A CORP OF MI	Chair
D377431,	Jun 15 1992	HERMAN MILLER, INC MS 0110	Seat and back unit for a chair
D386023,	Jun 15 1992	Herman Miller, Inc.	Seat and back unit for a chair
D420523,	Jun 05 1998	Herman Miller, Inc.	Chair
D431400,	Mar 14 2000		Mesh back chair with radiused edges
D452396,	Nov 22 2000	KLASSE PTY LTD	Seat back backcover
D453079,	Apr 20 2001	E CHAIR COMPANY, THE	Arm chair
D456626,	Jul 19 2001		Chair
D463693,	Jun 26 2001		Chair backrest
D465345,	Jun 28 2001	The e chair Company	Arm chair
D471042,	Feb 13 2002	HERMAN MILLER, INC	Back for a seating structure

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