Cables for telecommunication purposes, especially radiant cables; active or passive radio-frequency components, especially aerials, amplifiers, multiplexers, demultiplexers, transmitters, receivers

TELECOMMUNICATION CABLES IN THE NATURE OF RADIANT CABLES; ACTIVE AND PASSIVE RADIO-FREQUENCY COMPONENTS, NAMELY, AERIALS, AMPLIFIERS, MULTIPLEXERS, DEMULTIPLEXERS, RADIO TRANSMITTERS AND RADIO RECEIVERS