 
                 Patent Grant
 Patent Grant
                     D731836
 D731836
                    
    
    
    
    
    
    
| Number | Name | Date | Kind | 
|---|---|---|---|
| 2063803 | Gildersleeve | Dec 1936 | A | 
| D217216 | Cohen | Apr 1970 | S | 
| D324794 | Whitright | Mar 1992 | S | 
| D330141 | McNerney et al. | Oct 1992 | S | 
| D372624 | Chein | Aug 1996 | S | 
| D389365 | Lipson | Jan 1998 | S | 
| D412423 | Lipson | Aug 1999 | S | 
| D430986 | Lipson | Sep 2000 | S | 
| D459138 | Lipson | Jun 2002 | S | 
| D467460 | Swanson et al. | Dec 2002 | S | 
| D490638 | Gray et al. | Jun 2004 | S | 
| D509985 | Lipson | Sep 2005 | S | 
| D694565 | Zeghibe et al. | Dec 2013 | S |