Number | Date | Country | Kind |
---|---|---|---|
3137748 | Sep 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3388087 | Dieterich et al. | Jun 1968 | |
3461103 | Keberle et al. | Aug 1969 | |
3479310 | Dieterich et al. | Nov 1969 | |
3480592 | Dieterich et al. | Nov 1969 | |
3686108 | Rieff et al. | Aug 1972 | |
3756992 | Dieterich et al. | Sep 1973 | |
4046729 | Scriven et al. | Sep 1977 | |
4098933 | Burkhardt et al. | Jul 1978 | |
4192937 | Noll et al. | Mar 1980 | |
4269748 | Nachtkamp et al. | May 1981 | |
4284544 | Wegner et al. | Aug 1981 |
Number | Date | Country |
---|---|---|
22452 | Apr 1980 | EPX |
2708611 | May 1978 | DEX |
2725589 | Dec 1978 | DEX |
1148244 | Apr 1969 | GBX |
Entry |
---|
D. Dieterich et al., Angew. Chemie, 82, 53, (1970). |