| Number | Date | Country | Kind |
|---|---|---|---|
| 30-2011-0044266 | Oct 2011 | KR | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 1154689 | Bradley | Sep 1915 | A |
| 2828737 | Hale | Apr 1958 | A |
| 3873998 | Norris et al. | Apr 1975 | A |
| D277236 | Gregory | Jan 1985 | S |
| D302308 | Russell | Jul 1989 | S |
| 5072725 | Miller | Dec 1991 | A |
| 5207636 | Striano | May 1993 | A |
| 5259831 | LeBron | Nov 1993 | A |
| 5437614 | Grim | Aug 1995 | A |
| 5451200 | LaBella et al. | Sep 1995 | A |
| 6676617 | Miller | Jan 2004 | B1 |
| 6702770 | Bremer et al. | Mar 2004 | B2 |
| 7320670 | Modglin | Jan 2008 | B1 |
| 20030199799 | Modglin et al. | Oct 2003 | A1 |
| 20050015034 | Sansone et al. | Jan 2005 | A1 |
| 20090275871 | Liu | Nov 2009 | A1 |
| 20110295169 | Hendricks | Dec 2011 | A1 |