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Publication of AT254280BpublicationCriticalpatent/AT254280B/en
H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
AT547265A1964-06-191965-06-16
Circuit arrangement for telecommunication systems, in particular telephone systems with multi-stage switching fields
AT254280B
(en)
Circuit arrangement for wide-spanning switching fields marked over several switching stages in telecommunication systems, in particular telephone switching systems