Number | Name | Date | Kind |
---|---|---|---|
3535137 | Haller et al. | Oct 1970 | |
3887450 | Gilano et al. | Jun 1975 | |
3898350 | Gipstein et al. | Aug 1975 | |
3920618 | Ichimura et al. | Nov 1975 |
Number | Date | Country |
---|---|---|
1,113,309 | Aug 1961 | DT |
Entry |
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Chem. Abst., vol. 56, Mar. 1962, p. 6186(d). |
Chem. Abstracts, vol. 65, 1966, p. 10680(d). |