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RO107066B1
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Open lid (cap) telecommunication system for nonserviced (unattendanced) amplification stations
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RO107789B1
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Transducers automatic verifying device for the automatic trunk exchange
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RO107067B1
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Electronic plate for automatic interturban public station (post)
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RO100958B1
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Circuit for the discrimination of start calls produced by the coupled subscribers from automatic telephone exchanges
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RO99948B1
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Method and device for correcting the rate tariff for public trunk call station
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RO98679B1
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Method and device for eliminating incorrect metering determined by faults in telephone system
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RO95147A2
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Electronic equipment for charging in automatic telephone exchanges
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RO96024B1
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Answering machine for testing telephone exchanges
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RO92796A2
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Digital decibelmeter
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RO94951B1
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Adapter for urban public call stations
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RO94190A2
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Tariff device for annual long-distance telephone exchange
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RO93932A2
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Apparatus for registering meter pulses of phone calls duration at the domicile of phone users
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RO91012A2
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Subscriber connecting system in the crossbar automatic telephone exchange with 32 selection levels
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RO82927A2
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Device for phonic call at programmed time
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RO86173A2
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Rate generator for automatic message exchanges
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RO63345A2
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Thermosetting mixture based on epoxy resins and process for obtaining
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RO63142A2
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Device for drilling chair or railway plate
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RO63141A2
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Device for enterriating cables
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RO63089A2
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Urban public telephone device with cta-pc equipment
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