Number | Date | Country | Kind |
---|---|---|---|
4134497 | Oct 1991 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3527817 | Dietzler et al. | Aug 1970 | |
4704480 | Gefri et al. | Nov 1987 | |
4783559 | Matsushita | Nov 1988 |
Number | Date | Country |
---|---|---|
1643876 | Jan 1971 | DEX |
175238 | Nov 1922 | GBX |
1159967 | Jul 1969 | GBX |
Entry |
---|
Kajitani et al, Bulletin of the Chem. Soc. of Japan, vol. 52, No. 8, 1979, pp. 2343-2348. |