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						 Patent  
						   D601831  
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						 Priority  
						Dec 31 2008 
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						 Filed 
						Mar 19 2009  
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						 Issued 
						Oct 13 2009 
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						 Expiry 
						Oct 13 2023 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    7 
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					    13 
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			  The ornamental design for a chair back, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a front side 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 right side elevational view thereof; and
FIG. 5 is a left side elevational view thereof.
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in FIG. 1 are for illustrative purposes only and form no part of the claimed design.
	
	Wu, Dapeng
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
	  	 Assignee | 
	  	 Title | 
	  
	      
	 | D689709,  | 
	 Jan 14 2013 | 
	 Chameleon Chairs LLC | 
	 Event chair | 
	 
    
	 | D718967,  | 
	 Mar 27 2014 | 
	 Steelcase Inc.; Steelcase Inc | 
	 Chair | 
	 
    
	 | D724859,  | 
	 Mar 27 2014 | 
	 Steelcase Inc | 
	 Chair | 
	 
    
	 | D787218,  | 
	 Jul 09 2015 | 
	 Resinas Olot, S.L.; RESINAS OLOT, S L  | 
	 Chair | 
	 
    
	 | D807074,  | 
	 Jun 30 2016 | 
	 SEN HSIN INDUSTRIAL CO., LTD. | 
	 Chair | 
	 
    
	 | D809814,  | 
	 Jul 19 2016 | 
	 WEI SHEN STEEL FURNITURE CO., LTD.; WEI SHEN STEEL FURNITURE CO , LTD  | 
	 Chair | 
	 
    
	 | D885781,  | 
	 Nov 19 2018 | 
	 EMECO INDUSTRIES, INC. | 
	 Seat | 
	 
	
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
	  	 Assignee | 
	  	 Title | 
	  
	      
	 | 227961,  | 
	  | 
	  | 
	  | 
	 
    
	 | 234241,  | 
	  | 
	  | 
	  | 
	 
    
	 | 234653,  | 
	  | 
	  | 
	  | 
	 
    
	 | D284718,  | 
	 Jul 20 1983 | 
	 SOCIETE POUR LA TRANSFORMATION DES MATIERES PLASTIQUES STAMP, ROUTE DE MATAFELON FR-01760 NURIEUX-VOLOGNAT | 
	 Arm chair | 
	 
    
	 | D298987,  | 
	 May 05 1986 | 
	 Tiffany and Tiffany, Designers, Inc. | 
	 Bar stool | 
	 
    
	 | D307836,  | 
	 Feb 05 1987 | 
	 HAWORTH, LTD  | 
	 Chair | 
	 
    
	 | D333739,  | 
	 May 16 1990 | 
	 Coaster Co. of America, Inc. | 
	 Chair | 
	 
    
	 | D351294,  | 
	 Aug 19 1992 | 
	  | 
	 Chair | 
	 
    
	 | D396570,  | 
	 Jul 04 1996 | 
	  | 
	 Chair | 
	 
    
	 | D474621,  | 
	 Jun 07 2002 | 
	 Krueger International, Inc | 
	 Side chair | 
	 
    
	 | D487982,  | 
	 Mar 26 2003 | 
	 Elite Manufacturing Corp | 
	 Bar stool | 
	 
    
	 | D502613,  | 
	 Jul 02 2003 | 
	 Pro-Cord Spa | 
	 Chair | 
	 
    
	 | D582693,  | 
	 Jun 29 2007 | 
	 INDIO DA COSTA DESIGN LTDA  ME ; Indio Da Costa Arquitetura Ltda | 
	 Chair | 
	 
	
	
	
	
	
	  
	  	 | Date | 
	  	 Maintenance Fee Events | 
	  
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	  	 | Date | 
	  	 Maintenance Schedule | 
	  
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