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Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT209963BpublicationCriticalpatent/AT209963B/en
AT24259A1958-01-151959-01-13
Circuit arrangement for searching, selecting and establishing free connection paths in a two-stage field of crosspoints
AT209963B
(en)