Number | Name | Date | Kind |
---|---|---|---|
3428610 | Klebert | Feb 1969 | |
4218543 | Weber et al. | Aug 1980 | |
4298701 | Meyborg et al. | Nov 1981 |
Number | Date | Country |
---|---|---|
19232 | Nov 1980 | EPX |
Entry |
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Frisch et al., (Ed.), Advances in Urethane Sci. & Technology, Technomic, Westport, Conn., vol. 4, 1976, pp. 134 and 135. |