4. Telephonic communications
  5. Supervisory or control line signaling
  6. Signal reception at substation

Guy Quesnel

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Digital composite tone alerting

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
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Method and apparatus for burning damp oil-shales of low heating

Furnaces – Process – Burning pulverized fuel
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Profile ID: LFUS-PAI-P-687982

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