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Priority claimed from DEST16008Aexternal-prioritypatent/DE1103991B/en
Application filed by Bell Telephone MfgfiledCriticalBell Telephone Mfg
Application grantedgrantedCritical
Publication of BE599252RpublicationCriticalpatent/BE599252R/en
BE599252A1960-01-191961-01-19
Method of centrally determining amounts resulting from spatially separated telecommunication switching systems
BE599252R
(en)
Method and circuit arrangement for the detection of incoming current pulses via telecommunication lines, in particular for the detection of the charges incurred in telephone exchange systems