| Number | Name | Date | Kind |
|---|---|---|---|
| D103929 | Flanner | Apr 1937 | |
| D123117 | Whittier | Oct 1940 | |
| 2034852 | Wilhjelm | Mar 1936 | |
| 2117012 | Whittier | May 1938 | |
| 2368289 | Coxon | Jan 1945 | |
| 2771775 | Argabrite | Nov 1956 | |
| 3075454 | Henyan | Jan 1963 | |
| 3623370 | Busch et al. | Nov 1971 | |
| 4743122 | Yamano et al. | May 1988 |