| Number | Name | Date | Kind |
|---|---|---|---|
| D305400 | Petrovich | Jan 1990 | |
| 2457466 | Hanna | Dec 1948 | |
| 2761257 | Mendelsohn | Sep 1956 | |
| 2808687 | Brown | Oct 1957 | |
| 3014316 | Barnhart | Dec 1961 | |
| 3063208 | Bell et al. | Nov 1962 | |
| 3106806 | Hutchins | Oct 1963 | |
| 3510991 | Bowen | May 1970 | |
| 3871141 | Bonapace | Mar 1975 | |
| 4242843 | Phillips | Jan 1981 | |
| 4525959 | Ziebarth et al. | Jul 1985 | |
| 4730430 | Petrovich | Mar 1988 | |
| 5383308 | Beloff et al. | Jan 1995 |