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Priority claimed from DEJ23527Dexternal-prioritypatent/DE448916C/de
Priority claimed from DEJ23526Dexternal-prioritypatent/DE447099C/de
Application filed by Hugo Dr Ing JunkersfiledCriticalHugo Dr Ing Junkers
Application grantedgrantedCritical
Publication of DK36407CpublicationCriticalpatent/DK36407C/da