| Number | Name | Date | Kind |
|---|---|---|---|
| D253726 | Schuman et al. | Dec 1979 | |
| D253727 | Kowal | Dec 1979 | |
| D304773 | Beuchat | Nov 1989 | |
| D306916 | Wasserman | Mar 1990 | |
| 2308162 | Frank | Jan 1943 | |
| 2320807 | Upham | Jun 1943 | |
| 2367571 | Gaide | Jan 1945 | |
| 2458417 | Pollifrone | Jan 1949 | |
| 2710445 | Fitzpatrick | Jun 1955 | |
| 3052374 | Holohan | Sep 1962 | |
| 3552005 | Fischer | Jan 1971 | |
| 4167059 | Iten | Sep 1979 | |
| 4168571 | Francis | Sep 1979 | |
| 4198746 | Trotta | Apr 1980 | |
| 4272886 | Asano | Jun 1981 | |
| 4492025 | Jacobson | Jan 1985 | |
| 5050301 | Apprille, Jr. | Sep 1991 | |
| 5113586 | Lazarchik et al. | May 1992 | |
| 5157835 | Lazarchik et al. | Oct 1992 |