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			 The ornamental design for a face mask for administration of gaseous anesthesia, as shown and described. 
			  
			  
			  
			  
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The broken line showing in 
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Sep 17 2012 | Anesthesia Innovators, LLC | (assignment on the face of the patent) | / | 
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