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Priority claimed from DEB112901Dexternal-prioritypatent/DE404121C/de
Priority claimed from DEB112877Dexternal-prioritypatent/DE404120C/de
Application filed by Hans BartholdfiledCriticalHans Barthold
Application grantedgrantedCritical
Publication of AT105377BpublicationCriticalpatent/AT105377B/de