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Application filed by Otto Dr HansmannfiledCriticalOtto Dr Hansmann
Priority to AT689562ApriorityCriticalpatent/AT231922B/de
Priority to CH1059662Aprioritypatent/CH401866A/de
Priority to DEH42674Uprioritypatent/DE1884302U/de
Priority to GB37087/62Aprioritypatent/GB960676A/en
Application grantedgrantedCritical
Publication of AT231922BpublicationCriticalpatent/AT231922B/de