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						 Patent  
						   D603435  
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						 Priority  
						Aug 29 2008 
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						 Filed 
						Aug 29 2008  
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						 Issued 
						Nov 03 2009 
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						 Expiry 
						Nov 03 2023 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    2 
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					    30 
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			  The ornamental design for a dosage piston retention clip, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a perspective view of the retention clip in a first position;
FIG. 2 is a front elevation view of the retention clip in a first position, with the rear elevation view being, identical to the front elevation view;
FIG. 3 is a left elevation view of the retention clip in a first position, with the right elevation view being identical to the left elevation view;
FIG. 4 is a top plan view of the retention clip;
FIG. 5 is a bottom plum view of the retention clip; and,
FIG. 6 is a perspective view of the retention clip in a second position.
The broken line showing a piston in FIGS. 1, 2, 3, and 6 is for illustrative purposes only and forms no part of the claimed design.
	
	Walton, Frank A., Rasmussen, Jay A.
	
	
	
	
	  
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