Number | Date | Country | Kind |
---|---|---|---|
11109/74 | Aug 1974 | CH |
Number | Name | Date | Kind |
---|---|---|---|
3697513 | Siegrist | Oct 1972 | |
3725395 | Siegrist | Apr 1973 | |
3732221 | Siegrist | May 1973 | |
3779931 | Fries et al. | Dec 1973 | |
3796705 | Siegrist | Mar 1974 | |
3830848 | Siegrist | Aug 1974 |
Entry |
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Siegrist (VI), Helv. Chim. Acta 57(1), 1974, pp. 81-84, 88, 93, 100, 101. |