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					| Patent    D831286 |  
					| Priority Sep 13 2017 |  
					| Filed Sep 13 2017 |  
					| Issued Oct 16 2018 |  
					| Expiry Oct 16 2033 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 0 |  
					 | 17 |  
					 | 
						  n/a |  
						 
    |  |  | 
			  
			  
			  
			  
			  I claim the ornamental design for a vacuum base, as shown and described. | 
 
	
FIG. 1 is a front perspective view of our vacuum base;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a rear perspective view thereof.
The details shown in broken lines form no part of the claimed design.
	
	Knight, Erica
	
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	  
	
	
	
	  
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