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					| Patent    D573361 |  
					| Priority Jan 25 2008 |  
					| Filed Jan 25 2008 |  
					| Issued Jul 22 2008 |  
					| Expiry Jul 22 2022 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 24 |  
					 | 11 |  
					 | 
						  n/a |  
						 
    |  |  | 
			  
			  The ornamental design for an office chair, as shown and described. | 
 
	
FIG. 1 is a perspective view of an office chair 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; and,
FIG. 6 is a top plan view thereof.
	
	Kung, Hotzu
	
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | D597772, | Dec 15 2008 | True Seating Concepts, LLC | Back rest for a chair | 
    
	 | D610822, | Jan 21 2009 |  | Office chair | 
    
	 | D656329, | Aug 19 2009 | ITOKI CORPORATION | Chair | 
    
	 | D683151, | Sep 20 2012 | Steelcase Inc | Chair | 
    
	 | D689313, | Sep 20 2012 | Steelcase Inc. | Chair | 
    
	 | D689319, | Sep 20 2012 | Steelcase Inc. | Chair | 
    
	 | D690146, | Sep 20 2012 | Steelcase Inc. | Chair | 
    
	 | D690523, | Nov 06 2009 | PATRA CO , LTD | Office chair | 
    
	 | D690547, | Sep 20 2012 | Steelcase Inc. | Chair | 
    
	 | D695538, | Apr 16 2013 | KUSCH+CO GMBH | Seating furniture | 
    
	 | D697330, | May 10 2013 |  | Seat | 
    
	 | D697730, | Sep 20 2012 | Steelcase Inc | Chair | 
    
	 | D698165, | Sep 20 2012 | Steelcase Inc | Chair | 
    
	 | D699958, | Sep 20 2012 | Steelcase Inc | Chair | 
    
	 | D758774, | Apr 24 2015 | Steelcase Inc. | Headrest assembly | 
    
	 | D759415, | Apr 24 2015 | Steelcase Inc. | Headrest | 
    
	 | D760526, | Apr 24 2015 | Steelcase Inc. | Headrest assembly | 
    
	 | D781604, | Apr 24 2015 | Steelcase Inc. | Chair | 
    
	 | D781605, | Apr 24 2015 | Steelcase Inc. | Chair | 
    
	 | D916476, | Aug 17 2015 | Dxracer Technology Wuxi Co., Ltd. | Chair | 
    
	 | D916478, | Jan 24 2019 |  | Office chair | 
    
	 | D937593, | Jan 28 2019 | ZHEJIANG SUNON FURNITURE MANUFACTURE CO., LTD. | Chair | 
    
	 | D962692, | Nov 25 2021 |  | Chair back | 
    
	 | D970276, | Jul 07 2022 |  | Office chair | 
	
	
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | D495509, | Dec 12 2002 | NIGHTINGALE CORP | Chair | 
    
	 | D511418, | Jun 07 2004 | NIGHTINGALE CORP | Chair | 
    
	 | D512232, | Jan 21 2005 | MAXIFREE INTERNATIONAL CO , LTD | Office chair | 
    
	 | D512843, | Jun 10 2003 | Nightingale Corp. | Chair | 
    
	 | D543717, | Dec 01 2006 |  | Office chair | 
    
	 | D545076, | Feb 28 2005 | HAWORTH, INC | Office chair | 
    
	 | D545582, | Jan 17 2006 |  | Chair | 
    
	 | D548994, | Jan 23 2007 |  | Chair | 
    
	 | D549976, | Nov 09 2006 |  | Chair | 
    
	 | D552857, | Mar 08 2007 |  | Chair | 
    
	 | D557024, | Apr 23 2007 |  | Office chair | 
	
	
	
	
	
	  
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