Number | Name | Date | Kind |
---|---|---|---|
3757798 | Lambert | Sep 1973 | |
4778677 | Ebbesen | Oct 1988 | |
4953572 | Rose et al. | Sep 1990 | |
5051426 | Parnell | Sep 1991 |
Entry |
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The Condensed Chemical Dictionary, Hawley, p. 915, 4-1983. |
Tobacco Flavoring For Smoking Products, Leffingwell et al., pp. 3-8, 10, 11 and 14, 1972. |