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Priority claimed from DE742439348Aexternal-prioritypatent/DE2439348C3/en
Priority claimed from CS837574Aexternal-prioritypatent/CS178937B2/en
Application filed by Boehringer Mannheim GmbhfiledCriticalBoehringer Mannheim Gmbh
Priority to CS762701ApriorityCriticalpatent/CS189764B2/en
Publication of CS189764B2publicationCriticalpatent/CS189764B2/en