Number | Date | Country | Kind |
---|---|---|---|
2450287 | Oct 1974 | DT |
Number | Name | Date | Kind |
---|---|---|---|
2134654 | Lulek | Oct 1938 | |
3821262 | Schoenauber et al. | Jun 1974 |
Entry |
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Murakami et al., Chem. Abstracts 80 (1974), No. 16444k. |
Chemical Abstracts, 8th Collective Index, p. 4900F. |