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					| Patent    D371606 |  
					| Priority Aug 08 1994 |  
					| Filed Aug 08 1994 |  
					| Issued Jul 09 1996 |  
					| Expiry Jul 09 2010 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 6 |  
					 | 3 |  
					 | 
						  n/a |  
						 
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			  The ornamental design for an ear ventilation tube, as shown. | 
 
	
FIG. 1 is a top view of an ear ventilation tube, showing my new design, the
bottom view being identical;
FIG. 2 is a front elevational view thereof, the rear elevational view being
identical;
FIG. 3 is a side view thereof; and,
FIG. 4 is a side elevational view taken from the opposite side of FIG. 3.
	
	Doyle, Donald E.
	
	
	  
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	 | 6042574, | Mar 11 1998 |  | Oval ventilation ear tube | 
    
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	 | 9907700, | Apr 10 2012 | TUSKER MEDICAL, INC | Tympanic membrane pressure equalization tube | 
    
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 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | 4775370, | May 13 1986 |  | Middle ear drum ventilation and drainage technique | 
    
	 | 239330, |  |  |  | 
    
	 | D274753, | Sep 24 1982 |  | Middle ear ventilation tube | 
	
	
	
	
	
	  
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