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Priority claimed from DE1930O0007830external-prioritypatent/DE536037C/de
Priority claimed from DE1930O0017930external-prioritypatent/DE537822C/de
Priority claimed from DEO18771Dexternal-prioritypatent/DE539381C/de
Application filed by Orenstein & Koppel AgfiledCriticalOrenstein & Koppel Ag
Publication of BE378932ApublicationCriticalpatent/BE378932A/fr