4. Telephonic communications
  5. Centralized switching system
  6. Switching controlled in response to called station...

Ron Johan

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Miniature connector array

Telephonic communications – Centralized switching system – Switching controlled in response to called station...
Reexamination Certificate

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Telemetry system

Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2563777

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