Number | Name | Date | Kind |
---|---|---|---|
2495313 | Bludworth et al. | Jan 1950 | |
2694732 | McTeer et al. | Nov 1954 | |
3235553 | Sadle | Feb 1966 | |
3297785 | George et al. | Jan 1967 |
Number | Date | Country |
---|---|---|
962824 | Apr 1957 | DEX |
Entry |
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Kirk-Othmer, "Encyclopedia of Chemical Technology", vol. 10, p. 646 Wiley Publ. (1966). |