Number | Name | Date | Kind |
---|---|---|---|
3074114 | Petry | Jan 1963 | |
3246365 | Kloender | Apr 1966 | |
3307500 | Seewer et al. | Mar 1967 | |
3820933 | Aspin | Jun 1974 | |
3936258 | Lake | Feb 1976 | |
4105386 | Thiel et al. | Aug 1978 | |
4117054 | Salo | Sep 1978 | |
4531996 | Sukenik | Jul 1985 | |
4639346 | Pav et al. | Jan 1987 | |
4784596 | Heise | Nov 1988 | |
4885317 | Thien et al. | Dec 1989 |
Number | Date | Country |
---|---|---|
2161105 | Jan 1986 | GBX |
Entry |
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Article entitled "Plants for Extrusion of Flat Film, Thermoforming Film and Sheets", Kunststoffe German Plastics 78 (1988) 10, pp. 941/947. |