4. Telephonic communications
  5. Supervisory or control line signaling
  6. Signal receiver

Larry John Roybal

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Apparatus and method for noise immunity during signal detection

Telephonic communications – Supervisory or control line signaling – Signal receiver
Reexamination Certificate

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Automated workflow method for assigning work items to resources

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Signal-recognition arrangement using cadence tables

Telephonic communications – Supervisory or control line signaling – Signal receiver
Patent

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Profile ID: LFUS-PAI-P-1675073

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