|
RO106057B1
|
|
Device for clandestine callings elimination
|
|
RO100756B1
|
|
Signal convertor equipment for the processing of the telephone traffic which exits to the international network
|
|
RO90390A2
|
|
Telephone adapter for public urban telephone with repeated taxation
|
|
RO90391A2
|
|
Device for analyzing and registering information in telephony
|
|
RO86093A2
|
|
Circuit for automatically testing and checking links and crossings at pentaconta telephone exchange
|
|
RO86092A2
|
|
Circuit for automatically testing checking mf transmitters and decimals from pentaconta telephone exchange
|
|
RO76996A2
|
|
Device for testing and automatically verifying the output jonctions of automatic telephone central
|
|
RO72754A2
|
|
Automatic testing and verification device of injection joints in the automotive telephone center
|
|
RO67406A2
|
|
Telefonotester
|
|
RO67385A2
|
|
Method and apparatus for telephone traffic indication
|
|
RO67641B1
|
|
Electronic printer for electronic printer transmissions for telex code transmissions telex code
|
|
US3794783A
|
|
Telephone-system monitoring and recordal apparatus using ordinary paper
|
|
RO62822A2
|
|
Method for individually counting conversations of telephone subscribers of a type 7d automatic telephone central
|
