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					| Patent    D980405 |  
					| Priority Sep 23 2020 |  
					| Filed Dec 21 2020 |  
					| Issued Mar 07 2023 |  
					| Expiry Mar 07 2038 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 6 |  
					 | 19 |  
					 | 
						  n/a |  
						 
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			  The ornamental design for a tower circulator, as shown and described. | 
 
	
FIG. 1 is a top, front, right side perspective view of a tower circulator showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is an enlarged top plan view thereof; and,
FIG. 7 is an enlarged bottom plan view thereof.
The broken lines in the drawings illustrate portions of the tower circulator that form no part of the claimed design.
	
	Li, Chengmin
	
	
	
	
	  
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