Number | Date | Country | Kind |
---|---|---|---|
52-103542 | Aug 1977 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3332944 | Cosulich et al. | Jul 1967 | |
3514452 | Matsui et al. | May 1970 | |
4021449 | Fujimoto et al. | May 1977 |
Number | Date | Country |
---|---|---|
1071393 | Jun 1967 | GBX |
1110036 | Apr 1968 | GBX |
Entry |
---|
Merck Index, 7th Edition, p. 687 (1960). |