Number | Name | Date | Kind |
---|---|---|---|
2507537 | Mellan | May 1950 | |
2968158 | Ruschig et al. | Jan 1961 | |
3157700 | Schmidt et al. | Nov 1964 | |
3332942 | Breivogel et al. | Jul 1967 | |
3860724 | Bretschneider et al. | Jan 1975 | |
3899521 | Evers | Aug 1975 | |
3928590 | Wolf et al. | Dec 1975 |
Entry |
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Chemical Abstracts 67 (6) 26372f (1967). |
Chemical Abstracts 55 (1) 777e (1961). |
Chemical Abstracts 67 (3) 10032j (1967). |
The Merck Index, Merck & Co., Inc., N. J., 9th Ed., pp. 572, 573, 580, 1223 (1976). |