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EP0020564
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Extract from the Register of European Patents
| Type |  Patent family member | Publication No. | Date | Type | US4389435 | 21.06.1983 | A | Priority number | Date | US29612881 | 25.08.1981 | US94703678 | 29.09.1978 | Type |  Equivalent | Publication No. | Date | Type | WO8000649 |  Global Dossier
| 17.04.1980 | A1 | Priority number | Date | US94703678 | 29.09.1978 | Type | Equivalent | Publication No. | Date | Type | AU530694B | Global Dossier
| 28.07.1983 | B2 | AU5130279 | 03.04.1980 | A | Priority number | Date | US94703678 | 29.09.1978 | Type | Equivalent | Publication No. | Date | Type | EP0020564 | Global Dossier
| 07.01.1981 | A1 | Priority number | Date | US94703678 | 29.09.1978 | Type | Equivalent | Publication No. | Date | Type | CA1122236 | 20.04.1982 | A | Priority number | Date | US94703678 | 29.09.1978 | Type | Equivalent | Publication No. | Date | Type | GB2046599 | 19.11.1980 | A | Priority number | Date | US94703678 | 29.09.1978 |