Number | Date | Country | Kind |
---|---|---|---|
3335416 | Sep 1983 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3028833 | Hummel | Apr 1962 | |
4088430 | Giles | May 1978 | |
4102958 | Wertz | Jul 1978 | |
4146601 | Bishop | Mar 1979 | |
4178337 | Hall et al. | Dec 1979 | |
4395217 | Benad/i/ 425382 R | Jul 1983 |
Number | Date | Country |
---|---|---|
58-108120 | Jun 1983 | JPX |
Entry |
---|
Gerhard Schenkel, Plastics Extrusion Technology and Theory, 1966, pp. 203-205. |