Number | Name | Date | Kind |
---|---|---|---|
2373883 | Ferrel | Apr 1945 | |
2790389 | Ackerman | Apr 1957 | |
3031294 | Bryant et al. | Jan 1967 | |
3311013 | Phipps | Mar 1967 | |
3485171 | Wessells | Dec 1969 | |
3570401 | Euker | Mar 1971 | |
3693548 | Dereich et al. | Sep 1972 | |
3730093 | Cummings | May 1973 | |
3774022 | Dubrow et al. | Nov 1973 | |
3830671 | McArdle | Aug 1974 | |
3893814 | McGhee | Jul 1975 | |
4044684 | Gaggini et al. | Aug 1977 |
Entry |
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"The Condensed Chemical Dictionary", Van Nostrand Reinhold Co. (1971), pp.99, 715, 774, 245. |