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						 Patent  
						   D807418  
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						 Priority  
						Sep 09 2016 
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						 Filed 
						Sep 09 2016  
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						 Issued 
						Jan 09 2018 
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						 Expiry 
						Jan 09 2033 
					   
 TERM.DISCL. 
					   						
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			  The ornamental design for a ring bit, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a first end view of the design;
FIG. 2 is a second end view of the design;
FIG. 3 is a perspective view of the design;
FIG. 4 is another perspective view of the design;
FIG. 5 is another perspective view of the design; and,
FIG. 6 is a side view of the design.
The broken lines shown in the drawings represent environment and form no part of the claimed design.
	
	Mattila, Mikko, Korte, Pasi, Eskelin, Sami, Leino, Antti
	
	
	
	
	  
 	  	 | Patent | 
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	 | 1713273,  | 
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	  | 
	  | 
	 
    
	 | 5839519,  | 
	 Nov 08 1996 | 
	 Sandvik Intellectual Property Aktiebolag | 
	 Methods and apparatus for attaching a casing to a drill bit in overburden drilling equipment | 
	 
    
	 | 6035953,  | 
	 Jun 15 1995 | 
	 SANDVIK RC TOOLS AUSTRALIA PTY LTD | 
	 Down hole hammer assembly | 
	 
    
	 | 8974155,  | 
	 Jan 28 2010 | 
	 LEDERMANN GMBH & CO  KG | 
	 Machining tool | 
	 
    
	 | 20070256287,  | 
	  | 
	  | 
	  | 
	 
    
	 | 20080175679,  | 
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	  | 
	  | 
	 
    
	 | D481045,  | 
	 Nov 05 2002 | 
	 Ehwa Diamond Industrial Co., Ltd. | 
	 Tip for core drill | 
	 
    
	 | D745584,  | 
	 May 08 2014 | 
	 Sandvik Intellectual Property AB | 
	 Cutting tool | 
	 
    
	 | D748701,  | 
	 Nov 27 2013 | 
	  | 
	 Inner ring of a construction drilling cup | 
	 
    
	 | D753201,  | 
	 Feb 17 2015 | 
	 TaeguTec Ltd. | 
	 Milling cutter | 
	 
    
	 | D753738,  | 
	 Feb 17 2015 | 
	 TaeguTec Ltd. | 
	 Milling cutter | 
	 
    
	 | D771165,  | 
	 Feb 17 2015 | 
	 TaeguTec Ltd. | 
	 Milling cutter | 
	 
    
	 | JP2003166390,  | 
	  | 
	  | 
	  | 
	 
    
	 | KR20150014276,  | 
	  | 
	  | 
	  | 
	 
    
	 | WO9813575,  | 
	  | 
	  | 
	  | 
	 
	
	
	
	  
	  	 | Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
	  
	  | Sep 09 2016 |  | ROBIT OYJ | (assignment on the face of the patent) |  | / | 
    
    
    
| Nov 21 2016 | ESKELIN, SAMI | ROBIT OYJ | ASSIGNMENT OF ASSIGNORS INTEREST  SEE DOCUMENT FOR DETAILS   | 040433 | /0695 | 
    pdf | 
    
    
| Nov 21 2016 | MATTILA, MIKKO | ROBIT OYJ | ASSIGNMENT OF ASSIGNORS INTEREST  SEE DOCUMENT FOR DETAILS   | 040433 | /0695 | 
    pdf | 
    
    
| Nov 28 2016 | KORTE, PASI | ROBIT OYJ | ASSIGNMENT OF ASSIGNORS INTEREST  SEE DOCUMENT FOR DETAILS   | 040433 | /0695 | 
    pdf | 
    
    
| Nov 28 2016 | LEINO, ANTTI | ROBIT OYJ | ASSIGNMENT OF ASSIGNORS INTEREST  SEE DOCUMENT FOR DETAILS   | 040433 | /0695 | 
    pdf | 
    
    
	
	
	
	  
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