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Application filed by Isovolta Oesterreichische Isolierstoffwerke AktiengesellschaftfiledCriticalIsovolta Oesterreichische Isolierstoffwerke Aktiengesellschaft
Priority claimed from EP80890100Aexternal-prioritypatent/EP0025430B1/de
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Publication of ATE7211T1publicationCriticalpatent/ATE7211T1/de