Number | Date | Country | Kind |
---|---|---|---|
50-67467 | Jun 1975 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1708287 | Turrentine | Apr 1929 | |
1944423 | Girvin | Jan 1934 | |
2282289 | Robinson | May 1942 | |
2385483 | Wolff | Sep 1945 | |
3044862 | Paull | Jul 1962 | |
4009244 | Atsukawa et al. | Feb 1977 | |
4038367 | Atsukawa et al. | Jul 1977 | |
4038368 | Atsukawa et al. | Jul 1977 |
Number | Date | Country |
---|---|---|
2,524,115 | Dec 1975 | DEX |
Entry |
---|
Chem. Abstr., vol. 37, 1943, col. 3999 & 4000, #8-9-1. |