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					| Patent    D609400 |  
					| Priority Feb 27 2009 |  
					| Filed Feb 27 2009 |  
					| Issued Feb 02 2010 |  
					| Expiry Feb 02 2024 |  
					|  |  
					| Assg.orig |  
					|  |  
					| Entity unknown |  
					 | 14 |  
					 | 3 |  
					 | 
						  n/a |  
						 
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			  I claim the ornamental design for a hair straightener, as shown and described. | 
 
	
FIG. 1 is a perspective view of a hair straightener showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left view thereof;
FIG. 5 is a right view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines shown in the drawings illustrate portions of the article and form no part of the claimed design.
	
	Yang, Yanguo
	
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | 10258132, | Dec 31 2015 | Conair LLC | Hair styling apparatus | 
    
	 | D618395, | Nov 17 2009 | Kenford Industrial Company Limited | Hair straightener | 
    
	 | D619760, | Oct 15 2009 | DICKSON INDUSTRIAL CO , LTD | Hair straightener | 
    
	 | D632431, | Aug 06 2010 | GHD Korea, Inc. | Hair iron | 
    
	 | D672087, | Aug 04 2011 | Babyliss Faco SA | Hair straightener | 
    
	 | D804725, | Jan 08 2016 | Conair LLC | Hair styling apparatus | 
    
	 | D816270, | Sep 08 2016 | Conair LLC | Heated hair straightener | 
    
	 | D829989, | Sep 21 2016 | SHENZHEN LADY MERRY TECHNOLOGY CO., LTD. | Hairdressing apparatus | 
    
	 | D907848, | Apr 16 2019 | BABYLISS FACO SPRL | Hair straightening iron | 
    
	 | D924484, | Aug 07 2019 | THE CONSCIOUS BEAUTY GROUP LTD | Hair styling apparatus | 
    
	 | D926371, | Dec 24 2019 |  | Hair curler | 
    
	 | D942682, | Jun 15 2020 | Helen of Troy Limited | Straightening iron | 
    
	 | ER6144, |  |  |  | 
    
	 | ER7691, |  |  |  | 
	
	
	
	
	
	  
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