Number | Name | Date | Kind |
---|---|---|---|
3681263 | van der Linde et al. | Aug 1972 | |
4010286 | Hall et al. | Apr 1977 | |
4057515 | Boelens et al. | Nov 1977 | |
4070491 | Vinals et al. | Jan 1978 | |
4071034 | Vinals et al. | Jan 1978 | |
4071535 | Vinals et al. | Jan 1978 | |
4115406 | Vinals et al. | Sep 1978 | |
4120830 | Renold et al. | Oct 1978 | |
4186103 | Hall et al. | Jan 1980 | |
4192782 | Hall et al. | Mar 1980 | |
4240447 | Hall et al. | Dec 1980 |
Number | Date | Country |
---|---|---|
618374 | Aug 1978 | SUX |
620487 | Aug 1978 | SUX |
638597 | Dec 1978 | SUX |
Entry |
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Abstract of Dutch Patent Application 68,08496 (12/19/69) Chemische Fabriek Naarden. |