Number | Name | Date | Kind |
---|---|---|---|
3016364 | Muller et al. | Jan 1962 | |
4120850 | Pechold | Oct 1978 | |
4202957 | Bonk | May 1980 | |
4447590 | Szycher | May 1984 | |
4877856 | Hall et al. | Oct 1989 | |
5545706 | Barksby et al. | Aug 1996 |
Number | Date | Country |
---|---|---|
0 343 985 | Nov 1989 | EPX |
PCTUS9811367 | Nov 1998 | WOX |
Entry |
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Saunders & Frisch; Polyurethanes; pp. 284,285,294, 1962 |