4. Communications: electrical
  5. Continuously variable indicating
  6. Via radiant energy beam

SchlumbergerSema Inc.

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Bandpass processing of a spread spectrum signal

Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate

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Electricity meter

Communications: electrical – Continuously variable indicating – Via radiant energy beam
Reexamination Certificate

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Transmitter tolerant to crystal variations

Communications: electrical – Continuously variable indicating – With meter reading
Reexamination Certificate

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