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					| Patent    D583938 |  
					| Priority Dec 21 2007 |  
					| Filed Dec 21 2007 |  
					| Issued Dec 30 2008 |  
					| Expiry Dec 30 2022 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 20 |  
					 | 19 |  
					 | 
						  n/a |  
						 
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			  The ornamental design for a piston for syringe, as shown and described. | 
 
	
FIG. 1 is a perspective view of a piston for syringe showing my new design;
FIG. 2 is a is a top plan view thereof;
FIG. 3 is a front elevational view thereof, the rear elevational, right side elevational, and left side elevational views being identical thereto;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a bottom perspective view thereof;
FIG. 6 is a sectional view thereof taken along line 6—6 of FIG. 4; and,
FIG. 7 is a front elevational view thereof.
The broken lines are for illustrative purposes only and form no part of the claimed design.
	
	Sudo, Masamichi
	
	
	  
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