Number | Date | Country | Kind |
---|---|---|---|
3415138 | Apr 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4080462 | Brookes et al. | Mar 1978 | |
4139365 | Copping et al. | Feb 1979 | |
4500536 | Yoshida et al. | Feb 1985 |
Entry |
---|
Staab et al, Chem. Abstracts, vol. 56, Col. 7303 (f), (1961), QD1A51. |
Chemical Week, Jun. 21, 1972, p. 46. |