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					| Patent    D680335 |  
					| Priority Sep 10 2012 |  
					| Filed Sep 10 2012 |  
					| Issued Apr 23 2013 |  
					| Expiry Apr 23 2027 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 17 |  
					 | 49 |  
					 | 
						  n/a |  
						 
    |  |  | 
			  
			  The ornamental design for a grill brush attachment having spiral bristles, as shown and described. | 
 
	
FIG. 1 is a rear isometric view of a grill brush attachment having spiral bristles in accordance with the new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof; and,
FIG. 6 is a side view thereof.
The elements shown in broken lines illustrate portions of the grill brush attachment that form no part of the claimed design.
	
	Wales, Michael
	
	
	  
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