Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP10372880ApriorityCriticalpatent/JPS5730446A/ja
Publication of JPS5730446ApublicationCriticalpatent/JPS5730446A/ja
Publication of JPS6244737B2publicationCriticalpatent/JPS6244737B2/ja
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with switching networks and with central and partially central devices