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Priority claimed from DEM44585Uexternal-prioritypatent/DE1885152U/de
Priority claimed from DEM47945Uexternal-prioritypatent/DE1907723U/de
Application filed by Hopf A Metallwerke KgfiledCriticalHopf A Metallwerke Kg
Publication of DK117931BpublicationCriticalpatent/DK117931B/da