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Priority claimed from DEF48514Aexternal-prioritypatent/DE1238399B/de
Priority claimed from NO16699667Aexternal-prioritypatent/NO121652B/no
Application filed by Fromme Foerderanlagen GmbhfiledCriticalFromme Foerderanlagen Gmbh
Priority to NO288270ApriorityCriticalpatent/NO121830B/no
Publication of NO121830BpublicationCriticalpatent/NO121830B/no