TREA

using combinations of frequencies

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Industry

  • CPC
  • H04Q9/12
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Parent Industries

HELECTRICITY H04Electric communication H04QSELECTING H04Q9/00Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Current Industry

H04Q9/12using combinations of frequencies
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