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						 Patent  
						   D898437  
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						 Priority  
						Sep 30 2018 
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						 Filed 
						Mar 29 2019  
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						 Issued 
						Oct 13 2020 
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						 Expiry 
						Oct 13 2035 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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			  The ornamental design for a back cushion, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a perspective view of a back cushion showing the new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear 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 view thereof; and,
FIG. 7 is a bottom view thereof.
	
	Yan, Luqi
	
	
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
	  	 Assignee | 
	  	 Title | 
	  
	      
	 | 6913019,  | 
	 May 21 2002 | 
	  | 
	 Pressure alleviating pillow | 
	 
    
	 | 20130198961,  | 
	  | 
	  | 
	  | 
	 
    
	 | D446032,  | 
	 Sep 19 2000 | 
	 Banyan Licensing LLC | 
	 Seat cushion | 
	 
    
	 | D595529,  | 
	 May 28 2008 | 
	  | 
	 Pillow insert | 
	 
    
	 | D711173,  | 
	 Jan 10 2014 | 
	 SHC Technology Co., Ltd.; SHC TECHNOLOGY CO , LTD  | 
	 Chair seat | 
	 
    
	 | D793770,  | 
	 Jun 03 2016 | 
	 Aylio International, Inc | 
	 Lumbar support cushion | 
	 
    
	 | D848765,  | 
	 Jan 29 2018 | 
	 SHENZHEN LIAN DA TECHNOLOGY INDUSTRIAL CO., LTD. | 
	 Back cushion | 
	 
    
	 | D868501,  | 
	 Apr 14 2017 | 
	 QISHENG INDUSTRIAL HK CO., LIMITED | 
	 Seat cushion | 
	 
    
	 | D876639,  | 
	 Jun 12 2018 | 
	 Shenzhen Boanju Household Products Limited | 
	 Waist cushion | 
	 
    
	 | D882297,  | 
	 Dec 27 2018 | 
	  | 
	 Cushion | 
	 
	
	
	
	  
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