| Number | Date | Country | Kind |
|---|---|---|---|
| 590381 | Feb 1989 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 2293531 | Brooks | Aug 1942 | |
| 2394192 | Mann | Feb 1946 | |
| 2902795 | Heigl et al. | Sep 1959 | |
| 2945323 | Pratt | Jul 1960 | |
| 2945323 | Pratt | Jul 1960 | |
| 3415012 | Stubbmann | Dec 1968 | |
| 3678620 | Voges | Jul 1972 | |
| 3919163 | Clendinning et al. | Nov 1975 | |
| 4109442 | Maasbach | Aug 1970 | |
| 4646470 | Maggio | Mar 1987 |
| Entry |
|---|
| A. M. Leonard Catalog p. 33 Spring/Summer 1990. |