| Number | Name | Date | Kind |
|---|---|---|---|
| 2153890 | Honig | Apr 1939 | A |
| 2429387 | Buchheim | Oct 1947 | A |
| D155154 | Halvorson | Sep 1949 | S |
| 3023412 | Watkins | Mar 1962 | A |
| 3043168 | May et al. | Jul 1962 | A |
| D233911 | Marsh | Dec 1974 | S |
| D238702 | Rawson | Feb 1976 | S |
| D238703 | Rawson | Feb 1976 | S |
| D273121 | Rawson | Mar 1984 | S |
| D359967 | Eichenberg et al. | Jul 1995 | S |
| D397123 | Hardy | Aug 1998 | S |
| D599382 | Tsai | Sep 2009 | S |
| D599383 | Tsai | Sep 2009 | S |
| 7726554 | Thielges et al. | Jun 2010 | B2 |
| 20130288743 | Hunt et al. | Oct 2013 | A1 |