PTO 
                  Wrapper 
						
						PDF 
                  
					 
				 
				  
				  
						Dossier 
                
						Espace 
						Google  
				     
				 
			  
				  
					   
						 
				  
				  
				  
				  
				
					
						Patent
 
						   D391790
 
					 
				 
				
					
						Priority
 
						Oct 12 1994
					 
				 
				
					
						Filed
						Jan 02 1996
 
					 
				 
				
					
						Issued
						Mar 10 1998
					 
				 
				
					
						Expiry
						Mar 10 2012
					   
					   						
					 
				 
				
					
						
						
					 
				 
				
					
						Assg.orig
						
					 
				 
				
					
						
						
					 
				 
				
					
						Entity
						unknown
					 
				 
				
					 
						
					   17
					  
				 
				
					 
						
					   9
					  
				 
				
					 
						
					   
						  n/a
					   
					  
				 
				
						 
    
     
     
     
				
				
			
		   
		 
			
			  
			  The ornamental design for a back support chair , as shown and described.    
 
			  
			  
			  
			  
			 
		 
	 
 
	
FIG. 1 is a perspective view of a back support chair taken from above and
from the left side showing my new design, the chair base and chair
controls being shown in chain-dotted lines not being part of the design;
FIG. 2 is a right side elevational view thereof, the left side being a
mirror image;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a plan view thereof; and,
FIG. 5 is a rear elevational view thereof.
 
	
	Breen, William R. 
	
	
	  
 	  	 Patent 
	  	 Priority 
	  	 Assignee 
	  	 Title 
	   
	      
	 D416141 ,  
	 Jan 15 1998 
	 Global Total Office  
	 Chair 
	  
    
	 D417792 ,  
	 Apr 29 1998 
	 Klober GmbH  
	 Office chair 
	  
    
	 D424846 ,  
	 May 21 1999 
	  
	 Chair armrest 
	  
    
	 D428724 ,  
	 Jan 15 1998 
	 Global Total Office  
	 Chair 
	  
    
	 D433833 ,  
	 Jun 03 1999 
	 HNI TECHNOLOGIES INC   
	 Chair 
	  
    
	 D442402 ,  
	 May 30 2000 
	 Club Car, Inc  
	 Combination arm rest and hip restraint for a golf car or similar vehicle 
	  
    
	 D447351 ,  
	 Jan 14 2000 
	 Oohiro Works, Ltd.  
	 Barber or beauty chair 
	  
    
	 D547078 ,  
	 Jan 24 2006 
	  
	 Chair 
	  
    
	 D547958 ,  
	 Jan 19 2006 
	  
	 Chair 
	  
    
	 D549474 ,  
	 May 07 2004 
	 Topstar GmbH  
	 Chair 
	  
    
	 D565854 ,  
	 Jul 12 2007 
	  
	 Chair 
	  
    
	 D666436 ,  
	 May 26 2011 
	 Blumenthal Distributing, Inc.  
	 Office chair arm 
	  
    
	 D683572 ,  
	 Jun 07 2012 
	 American Seating Company  
	 Chair arm 
	  
    
	 D846324 ,  
	 Sep 05 2017 
	  
	 Chair back 
	  
    
	 D883693 ,  
	 Oct 19 2018 
	 PEDRALI S.p.A.  
	 Chair 
	  
    
	 D924614 ,  
	 Oct 10 2018 
	 Flokk AB  
	 Backrest of a chair 
	  
    
	 ER2816 ,  
	  
	  
	  
	  
	
	
	
	  
 	  	 Patent 
	  	 Priority 
	  	 Assignee 
	  	 Title 
	   
	      
	 119047 ,  
	  
	  
	  
	  
    
	 D268803 ,  
	 Jul 15 1980 
	 BIO-SUPPORT INDUSTRIES LTD ,  A COMPANY OF ONTARIO  
	 Back rest 
	  
    
	 D274769 ,  
	 Sep 17 1980 
	 Olivetti Synthesis, S.p.A.  
	 Chair 
	  
    
	 D281210 ,  
	 Feb 10 1983 
	 6287 HOLDINGS INC ; INTEGRAL ORTHOPEDICS INC   
	 Back rest 
	  
    
	 D345874 ,  
	 Sep 27 1991 
	 Global Total Office  
	 Arm rest 
	  
    
	 D366582 ,  
	 Aug 03 1994 
	 HERMAN MILLER, INC   
	 Armrest 
	  
    
	 D368596 ,  
	 Apr 03 1995 
	 NIGHTINGALE CORP   
	 Highback chair 
	  
    
	 D369259 ,  
	 Oct 12 1994 
	 GT GOLF HOLDINGS, INC   
	 Back support chair 
	  
    
	 D371475 ,  
	 Jan 12 1994 
	 Global Total Office  
	 Armrest 
	  
	
	
	
	
	
	  
	  	 Date 
	  	 Maintenance Fee Events 
	   
	  n/a
	
	
	
	  
	  	 Date 
	  	 Maintenance Schedule 
	   
	  n/a