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					| Patent    D804035 |  
					| Priority Sep 24 2014 |  
					| Filed Apr 20 2016 |  
					| Issued Nov 28 2017 |  
					| Expiry Nov 28 2032 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 30 |  
					 | 13 |  
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						  n/a |  
						 
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			  The ornamental design for a hearing aid, as shown and described. | 
 
	
FIG. 1 is a perspective view of a first embodiment of a hearing aid embodying the design;
FIG. 2 is a front view of the hearing aid of FIG. 1;
FIG. 3 is a rear view of the hearing aid of FIG. 1;
FIG. 4 is a right side view of the hearing aid of FIG. 1;
FIG. 5 is a left side view of the hearing aid of FIG. 1;
FIG. 6 is a top view of the hearing aid of FIG. 1;
FIG. 7 is a bottom view of the hearing aid of FIG. 1;
FIG. 8 is a perspective view of a second embodiment of a hearing aid embodying the design;
FIG. 9 is a front view of the hearing aid of FIG. 8;
FIG. 10 is a rear view of the hearing aid of FIG. 8;
FIG. 11 is a right side view of the hearing aid of FIG. 8;
FIG. 12 is a left side view of the hearing aid of FIG. 8;
FIG. 13 is a top view of the hearing aid of FIG. 8; and,
FIG. 14 is a bottom view of the hearing aid of FIG. 8.
	
	Niccolai, Richard, Gabathuler, Bruno, Dittli, Erich, Meier, Hans Georg, Dietrich, Katja
	
	
	  
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	 | D836599, | Jun 06 2017 | SHENZHEN HENG SHANG PIN TECHNOLOGY CO., LTD | Wireless headset | 
    
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	 | D915347, | Sep 03 2020 | SHENZHEN HENG SHANG PIN TECHNOLOGY CO., LTD | Wireless headset | 
    
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