| Number | Name | Date | Kind |
|---|---|---|---|
| 4302885 | Levine et al. | Dec 1981 | A |
| D268910 | Shipp et al. | May 1983 | S |
| 5471218 | Talbot et al. | Nov 1995 | A |
| 5859693 | Dunne et al. | Jan 1999 | A |
| 5886775 | Houser et al. | Mar 1999 | A |
| 8934009 | Kumagai et al. | Jan 2015 | B2 |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29502422 | Sep 2014 | US |
| Child | 29548905 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14021384 | Sep 2013 | US |
| Child | 29502422 | US |