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Priority claimed from EP19830302691external-prioritypatent/EP0131656A1/en
Application filed by Kontak Mfg Co LtdfiledCriticalKontak Mfg Co Ltd
Publication of FI831692A0publicationCriticalpatent/FI831692A0/fi
Publication of FI831692LpublicationCriticalpatent/FI831692L/fi