4. Telephonic communications
  5. Composite substation or terminal

Ronald Scott Langham

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Method and apparatus for controlling a computer to implement...

Telephonic communications – Composite substation or terminal
Reexamination Certificate

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Method and apparatus for controlling a computer to implement...

Telephonic communications – Composite substation or terminal
Reexamination Certificate

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Method and apparatus for controlling a computer to implement...

Telephonic communications – Supervisory or control line signaling – Substation originated
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2108886

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