Number | Date | Country | Kind |
---|---|---|---|
2460052 | Dec 1974 | DE |
Number | Name | Date | Kind |
---|---|---|---|
3275601 | Schnell | Sep 1966 | |
3775367 | Nouvertne et al. | Nov 1973 | |
3836490 | Bockmann et al. | Sep 1974 | |
3845007 | Nouvertne et al. | Oct 1974 |
Entry |
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Chemistry & Physics of Polycarbonates, pp. 199-201, by Herman Schnell, 4/1965. |