Number | Name | Date | Kind |
---|---|---|---|
1865008 | Holm | Jun 1932 | |
1866731 | Staib | Jul 1932 | |
1875105 | Muggleton | Aug 1932 |
Number | Date | Country |
---|---|---|
7,008,513 | Dec 1970 | NL |
Entry |
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Seferovich, "Journal of Chemical Industry (Moscow)", vol. 10, 1934, pp. 62-64. |
Hilli et al., "Angew. Chem.", vol. 72, 1960, pp. 850-855. |