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Priority to RO9995880QpriorityCriticalpatent/RO79481A2/en
Publication of RO79481A2publicationCriticalpatent/RO79481A2/en
RO9995880Q1980-01-281980-01-28
DEVICE FOR THE AUTOMATIC VERIFICATION OF MULTIPLE FREQUENCY ARRIVAL REGISTERS OF AN URBAN AUTOMATIC TELEPHONE CENTRAL
RO79481A2
(en)