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Application filed by Vaclav KralfiledCriticalVaclav Kral
Priority to CS491976ApriorityCriticalpatent/CS189990B1/cs
Publication of CS189990B1publicationCriticalpatent/CS189990B1/cs
CS491976A1976-07-271976-07-27Connection for the transmission of the remote measuring and signalling for the selection in the automatic telephone net
CS189990B1
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