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						 Patent  
						   D574921  
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						 Priority  
						Aug 02 2004 
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						 Filed 
						Sep 21 2006  
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						 Issued 
						Aug 12 2008 
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						 Expiry 
						Aug 12 2022 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    3 
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					    22 
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			  The ornamental design for a sewage tank flange, as shown and described.  
			  
			  
			  
			  
			 
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FIG. 1 is a perspective view of a sewage tank flange in accordance with the new design;
FIG. 2 is a front elevational view thereof; a rear elevational view being a mirror image thereof; and,
FIG. 3 is a bottom view thereof.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.
	
	Massey, Adrian
	
	
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
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	  	 Title | 
	  
	      
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	  | 
	 
    
	 | 4909393,  | 
	 Nov 14 1988 | 
	 BERWICK MANUFACTURING, INC                                  AN OHIO CORPORATION | 
	 Container reconfiguring system | 
	 
    
	 | 4961670,  | 
	 Mar 27 1989 | 
	 BONAR PLASTICS CORPORATION | 
	 Molded septic tank | 
	 
    
	 | 5439180,  | 
	 May 11 1993 | 
	 Environment/One Corporation | 
	 Readily installed universal sewage grinder pump | 
	 
    
	 | 5494183,  | 
	 Jan 12 1990 | 
	  | 
	 Double wall storage tank systems having an intermittently bonded wall | 
	 
    
	 | 5562254,  | 
	 Aug 02 1994 | 
	 Environment One Corp.; ENVIRONMENT ONE CORP  | 
	 Grinder pump station | 
	 
    
	 | 5597948,  | 
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	  | 
	 Storage tank system with independent monitoring of ribs and tank wall | 
	 
    
	 | 5752315,  | 
	 Aug 02 1994 | 
	 Environment One Corporation | 
	 Grinder pump station and method of manufacture thereof | 
	 
    
	 | 5806702,  | 
	 Aug 08 1997 | 
	 A.K. Industries, Inc. | 
	 Ribbed storage tank | 
	 
    
	 | 5816510,  | 
	 Aug 02 1994 | 
	 Environment One Corporation | 
	 Grinder pump station | 
	 
    
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	 Sep 11 1997 | 
	 Little Giant Pump Company | 
	 Buried plastic sewage sump | 
	 
    
	 | 6280614,  | 
	 Mar 02 2000 | 
	 Xerxes Corporation | 
	 Residential septic tank | 
	 
    
	 | 6305410,  | 
	 Apr 28 1999 | 
	 Liberty Pumps | 
	 Sewage ejector basin and assembly | 
	 
    
	 | 6763950,  | 
	 Mar 31 2000 | 
	 Norwalk Wastewater Equipment Company | 
	 Wastewater treatment apparatus | 
	 
    
	 | 20050178721,  | 
	  | 
	  | 
	  | 
	 
    
	 | 154966,  | 
	  | 
	  | 
	  | 
	 
    
	 | D357530,  | 
	 Dec 17 1993 | 
	 THE PLASTICS GROUP, INC  | 
	 Sewage septic tank | 
	 
    
	 | D397763,  | 
	 Aug 18 1997 | 
	 A. K. Industries | 
	 Ribbed underground storage tank | 
	 
    
	 | D492000,  | 
	 May 02 2003 | 
	  | 
	 Septic tank | 
	 
    
	 | D529573,  | 
	 Aug 02 2004 | 
	 Environment One Corporation | 
	 Sewage tank | 
	 
    
	 | DE19961414,  | 
	  | 
	  | 
	  | 
	 
    
	 | FR2790495,  | 
	  | 
	  | 
	  | 
	 
	
	
	
	
	
	  
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