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					| Patent    D946441 |  
					| Priority Sep 26 2019 |  
					| Filed Sep 26 2019 |  
					| Issued Mar 22 2022 |  
					| Expiry Mar 22 2037 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 1 |  
					 | 12 |  
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						  n/a |  
						 
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			  The ornamental design for a piezoelectric buzzer, as shown and described. | 
 
	
 FIG. 1 is a perspective view of the piezoelectric buzzer showing the design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side view thereof; and,
FIG. 7 is a right side view thereof.
The broken line showing is included for the purpose of illustrating portions of the “article” and forms no part of the claimed design.
	
	Chen, Huisheng
	
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | ER2811, |  |  |  | 
	
	
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | D254727, | Aug 22 1977 | Star Seimitsu Kabushiki Kaisha | Electronic buzzer or similar article | 
    
	 | D254728, | Dec 21 1977 | Star Seimitsu Kabushiki Kaisha | Electronic buzzer or similar article | 
    
	 | D254729, | Dec 21 1977 | Star Seimitsu Kabushiki Kaisha | Electronic buzzer or similar article | 
    
	 | D254730, | Jan 04 1978 | Star Seimitsu Kabushiki Kaisha | Electronic buzzer or similar article | 
    
	 | D254731, | Jan 04 1978 | Star Seimitsu Kabushiki Kaisha | Electronic buzzer or similar article | 
    
	 | D389421, | Sep 27 1996 | Star Micronics Co., Ltd. | Audible signal for alarm units | 
    
	 | D429473, | Jun 04 1999 | Citizen Electronics Co., Ltd. | Buzzer | 
    
	 | D430813, | Jun 04 1999 | Citizen Electronics Co., Ltd. | Buzzer | 
    
	 | D431791, | Aug 17 1999 | Citizen Electronics Co., Ltd. | Electromagnetic sound generator | 
    
	 | D558080, | Feb 23 2006 | Triton Signal Corporation | Backup alarm | 
    
	 | D771021, | Jun 16 2015 | FOSTER ELECTRIC COMPANY LIMITED; AirWatch LLC | Speaker | 
    
	 | D804347, | Sep 10 2015 | TDK Corporation | Surface mounted piezoelectric sounder | 
	
	
	
	
	
	  
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