 
                 Patent Grant
 Patent Grant
                     D643518
 D643518
                    
    
    
    
    
    
    
    
| Number | Name | Date | Kind | 
|---|---|---|---|
| 3725640 | Kunz | Apr 1973 | A | 
| D394310 | Rector | May 1998 | S | 
| D479590 | Ko | Sep 2003 | S | 
| D507337 | Chan | Jul 2005 | S | 
| D574070 | Dabrowski | Jul 2008 | S | 
| D610663 | Yeung | Feb 2010 | S | 
| D615637 | Ouyang | May 2010 | S | 
| D620570 | Thomas | Jul 2010 | S | 
| D625565 | Alford | Oct 2010 | S |