Number | Date | Country | Kind |
---|---|---|---|
317847 | Dec 1978 | CAX |
Number | Name | Date | Kind |
---|---|---|---|
2709648 | Ryker et al. | May 1955 |
Number | Date | Country |
---|---|---|
628298 | Oct 1961 | CAX |
865037 | May 1971 | CAX |
Entry |
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German Offen., 2,435,747, Chem. Abst., vol. 83 (1975). |
1972-1976 Chem. Subst. Index, Chem. Abst., p. 34553 CS. |
Belg. Pat. 657536, Chem. Abst., vol. 64 (1966) 13321 d. |