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Publication date
Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT192969BpublicationCriticalpatent/AT192969B/de
AT192969D1955-12-281955-12-28Fernmelde- insbesondere Fernsprechanlage mit zur Herstellung gewisser Verbindungen verschieden berechtigten Teilnehmern
AT192969B
(de)