Number | Date | Country | Kind |
---|---|---|---|
61-183149 | Aug 1986 | JPX | |
61-274992 | Nov 1986 | JPX | |
62-78477 | Mar 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3251897 | Wise | May 1966 | |
3255267 | Fritz et al. | Jun 1966 | |
4567308 | Yoshida et al. | Jan 1986 |
Entry |
---|
Otouma et al, "Bull. Chem. Soc. Japan", 42(2449), 1969. |