Number | Name | Date | Kind |
---|---|---|---|
2667483 | Zeegers | Jan 1954 | |
2828307 | Soeterbrock et al. | Mar 1958 | |
3701814 | Shilling | Oct 1972 | |
3969344 | Ackermann et al. | Jul 1976 |
Number | Date | Country |
---|---|---|
2305921 | Aug 1973 | DEX |
1092630 | Nov 1967 | GBX |
1398501 | Jun 1973 | GBX |
Entry |
---|
Merck Index, 8th Ed., p. 194, Merck & Co., Rahway, N.J., 1968. |