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					| Patent    D762750 |  
					| Priority Dec 12 2014 |  
					| Filed Jun 12 2015 |  
					| Issued Aug 02 2016 |  
					| Expiry Aug 02 2031 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 11 |  
					 | 20 |  
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			  The ornamental design for a three-dimensional printer, as shown and described. | 
 
	
FIG. 1 is a perspective view of a three-dimensional printer showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof; and,
FIG. 6 is a top plan view thereof.
The broken lines are for illustrative purposes only and form no part of the claimed design. The diagonal lines indicate transparency.
	
	Liu, Yanjun, Jiang, Chengyu
	
	
	  
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