| Number | Name | Date | Kind |
|---|---|---|---|
| 3033211 | Godfrey | May 1962 | |
| 3371000 | Davenport | Feb 1968 | |
| 4186754 | Labbe | Feb 1980 | |
| 4409995 | Nichols | Oct 1983 | |
| 4474190 | Brand | Oct 1984 | |
| 4619276 | Albertson et al. | Oct 1986 |
| Entry |
|---|
| Tobacco Encyclopedia, Edited by Ernst Voges, TJI (1984), pp. 457-459. |