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						 Patent  
						   D853545  
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						 Priority  
						Nov 09 2017 
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						 Filed 
						May 08 2018  
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						 Issued 
						Jul 09 2019 
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						 Expiry 
						Jul 09 2034 
					   
					   						
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						 Assg.orig 
						
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						 Entity 
						unknown 
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					    13 
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					    26 
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			  The ornamental design for an air purifier, as shown and described. 
			  
			  
			  
			  
			 
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FIG. 1 is a perspective view of an air purifier showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines illustrate portions of the air purifier which form no part of the claimed design.
The curved shading in FIG. 1 and FIG. 2 illustrates that the outer section is a concave surface.
	
	Zhong, Si
	
	
	  
 	  	 | Patent | 
	  	 Priority | 
	  	 Assignee | 
	  	 Title | 
	  
	      
	 | D914184,  | 
	 Aug 15 2019 | 
	 SUAREZ INDUSTRIES, INC  | 
	 Air purifier | 
	 
    
	 | D927661,  | 
	 Apr 29 2019 | 
	 Vornado Air, LLC | 
	 Heater | 
	 
    
	 | D927662,  | 
	 May 10 2019 | 
	 Vornado Air, LLC | 
	 Heater | 
	 
    
	 | D946728,  | 
	 Jun 04 2020 | 
	 WINIX INC. | 
	 Humidifier | 
	 
    
	 | D946736,  | 
	 Dec 17 2019 | 
	 LG Electronics Inc. | 
	 Portable hood for ventilation | 
	 
    
	 | D973853,  | 
	 Mar 16 2021 | 
	 Shenzhen Intellirocks Tech Co., Ltd. | 
	 Heater | 
	 
    
	 | ER4607,  | 
	  | 
	  | 
	  | 
	 
    
	 | ER5383,  | 
	  | 
	  | 
	  | 
	 
    
	 | ER5852,  | 
	  | 
	  | 
	  | 
	 
    
	 | ER6170,  | 
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	  | 
	  | 
	 
    
	 | ER6342,  | 
	  | 
	  | 
	  | 
	 
    
	 | ER7481,  | 
	  | 
	  | 
	  | 
	 
    
	 | ER8841,  | 
	  | 
	  | 
	  | 
	 
	
	
	
	  
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	 Nov 03 1977 | 
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	 Dec 22 1988 | 
	 THE HOLMES GROUP, INC  | 
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	 Samsung Electronics Co., Ltd. | 
	 Humidifier with air cleaning means | 
	 
    
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	 Alpine Electronics, Inc. | 
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	 Sep 27 2010 | 
	 Ningbo Zhenhai Yuanda Electromechanical Manufacturing Co., Ltd. | 
	 Heater | 
	 
    
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	 Jan 14 2011 | 
	 AIRGLE | 
	 Air purifier enclosure | 
	 
    
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	 Nov 18 2011 | 
	 VAPORFECTION INTERNATIONAL, INC  | 
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	 Mar 13 2014 | 
	 Lasko Operation Holdings, LLC | 
	 Air purifier | 
	 
    
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	 Oct 02 2013 | 
	 LUXSWEEP ELECTRIC COMPANY | 
	 Air purifier | 
	 
    
	 | D745128,  | 
	 Aug 13 2013 | 
	 Lasko Operation Holdings, LLC | 
	 Table top air purifier | 
	 
    
	 | D750209,  | 
	 Jun 27 2014 | 
	 Daikin Industries Ltd. | 
	 Air purifier | 
	 
    
	 | D759797,  | 
	 Aug 13 2013 | 
	 Lasko Operation Holdings, LLC | 
	 Table top air purifier | 
	 
    
	 | D783793,  | 
	 Mar 19 2015 | 
	 Daikin Industries Ltd | 
	 Air purifier | 
	 
    
	 | D797915,  | 
	 Apr 22 2015 | 
	 Lasko Operation Holdings, LLC | 
	 Body for a portable air cleaner | 
	 
    
	 | D804001,  | 
	 Dec 09 2015 | 
	 Vornado Air, LLC | 
	 Heater | 
	 
    
	 | D819797,  | 
	 Aug 05 2013 | 
	  | 
	 Air purifier | 
	 
    
	 | D838354,  | 
	 Aug 13 2013 | 
	 Lasko Operation Holdings, LLC | 
	 Table top air purifier with a projector | 
	 
	
	
	
	
	
	  
	  	 | Date | 
	  	 Maintenance Fee Events | 
	  
	  n/a
	
	
	
	  
	  	 | Date | 
	  	 Maintenance Schedule | 
	  
	  n/a