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Priority claimed from DEB48950Aexternal-prioritypatent/DE1121618B/de
Priority claimed from DEB52722Aexternal-prioritypatent/DE1125934B/de
Application filed by Boehringer & Soehne GmbhfiledCriticalBoehringer & Soehne Gmbh
Publication of BE578360ApublicationCriticalpatent/BE578360A/fr