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						 Patent  
						   D737871  
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						 Priority  
						Jul 23 2013 
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						 Filed 
						Mar 06 2015  
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						 Issued 
						Sep 01 2015 
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						 Expiry 
						Sep 01 2029 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    10 
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			  We claim the ornamental design for a draft chamber, as shown and described. 
			  
			 
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FIG. 1 is a front perspective view of a draft chamber of the present invention;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines shown represent unclaimed subject matter and form no part of the claimed design.
	
	Okamoto, Yasutoshi, Mochizuki, Akihiro, Yamada, Fumio
	
	
	  
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