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						 Patent  
						   D677650  
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						 Priority  
						Apr 29 2011 
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						 Filed 
						Oct 26 2011  
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						 Issued 
						Mar 12 2013 
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						 Expiry 
						Mar 12 2027 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    12 
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					    13 
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			  The ornamental design for an amplifier, as shown, and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a rear elevational view of an amplifier showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a perspective view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is a top plan view thereof.
	
	Bosa, Enrico
	
	
	  
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