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						 Patent  
						   D579167  
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						 Priority  
						Nov 26 2007 
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						 Filed 
						Nov 26 2007  
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						 Issued 
						Oct 21 2008 
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						 Expiry 
						Oct 21 2022 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    7 
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					    2 
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						  n/a 
					   
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			  The ornamental design for a jack, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a perspective view of a jack showing my design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
	
	Lin, Vincent W.
	
	
	  
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	  	 Title | 
	  
	      
	 | 8608131,  | 
	 Feb 05 2010 | 
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	 | 8622369,  | 
	 Feb 05 2010 | 
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	 Jun 13 2006 | 
	 TEST RITE PRODUCTS CORP  | 
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	 Jul 21 2010 | 
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	 Aug 12 2016 | 
	 HANGZHOU TIANHENG MACHINERY CO , LTD  | 
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	 | D874781,  | 
	 Jul 12 2016 | 
	 HANGZHOU TIANHENG MACHINERY CO , LTD  | 
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	 | D976515,  | 
	 Jun 10 2020 | 
	  | 
	 Hydraulic jack | 
	 
	
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
	  	 Assignee | 
	  	 Title | 
	  
	      
	 | 6722634,  | 
	 Oct 04 2002 | 
	  | 
	 Joint between a first cylinder and a second cylinder of a hydraulic jack to allow the second cylinder to drive the arm directly | 
	 
    
	 | D332337,  | 
	 Feb 21 1991 | 
	  | 
	 Jack | 
	 
	
	
	
	  
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