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						 Patent  
						   D864641  
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						 Priority  
						Jun 10 2016 
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						 Filed 
						Nov 02 2017  
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						 Issued 
						Oct 29 2019 
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						 Expiry 
						Oct 29 2034 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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			  The ornamental design for an office chair, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a front perspective view of the office chair showing my new invention;
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.
In the drawings, the broken lines represent portions of the office chair that form no part of the claimed design.
	
	Geelen, Norbert
	
	
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
	  	 Assignee | 
	  	 Title | 
	  
	      
	 | 6149236,  | 
	 Oct 14 1996 | 
	 Vitra Patente AG | 
	 Chair frame, control mechanism and upholstery | 
	 
    
	 | 240375,  | 
	  | 
	  | 
	  | 
	 
    
	 | D509969,  | 
	 Sep 05 2003 | 
	 Steelcase Inc | 
	 Seating unit | 
	 
    
	 | D535126,  | 
	 Mar 03 2004 | 
	 Steelcase Inc | 
	 Seat and back | 
	 
    
	 | D567522,  | 
	 Oct 24 2006 | 
	 Okamura Corporation | 
	 Chair | 
	 
    
	 | D666841,  | 
	 Apr 26 2010 | 
	 Haworth Inc. | 
	 Office chair | 
	 
    
	 | D710640,  | 
	 Mar 21 2012 | 
	 ITOKI CORPORATION | 
	 Chair | 
	 
    
	 | D816363,  | 
	 May 24 2017 | 
	  | 
	 Chair | 
	 
    
	 | D824710,  | 
	 Jun 10 2016 | 
	 BOCK 1 GmbH & Co. KG | 
	 Office chair | 
	 
	
	
	
	
	
	  
	  	 | Date | 
	  	 Maintenance Fee Events | 
	  
	  n/a
	
	
	
	  
	  	 | Date | 
	  	 Maintenance Schedule | 
	  
	  n/a