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					| Patent    D257283 |  
					| Priority Feb 08 1979 |  
					| Filed Feb 08 1979 |  
					| Issued Oct 07 1980 |  
					| Expiry Oct 07 1994 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 16 |  
					 | 5 |  
					 | 
						  n/a |  
						 
    |  |  | 
			  
			  The ornamental design for a roof stack vent, substantially as shown and described. | 
 
	
FIG. 1 is a perspective view of a roof stack vent showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof.
	
	Roberts, Luther L.
	
	
	  
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	 | D709173, | Aug 14 2013 | SOUTHEASTERN METALS MANUFACTURING COMPANY, INC | Roof jack | 
    
	 | D709174, | Jan 05 2012 | SOUTHEASTERN METALS MANUFACTURING COMPANY, INC | Roof jack | 
    
	 | RE39825, | Dec 17 1998 | Diversi Plast Products, Inc. | Roof batten | 
	
	
	
	
	
	
	
	  
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