4. Telephonic communications
  5. With usage measurement
  6. Call charge metering or monitoring

Donald M. Gerth

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System and method for detecting cloning fraud in...

Telecommunications – Radiotelephone system – Security or fraud prevention
Reexamination Certificate

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Telephone call monitoring method and apparatus

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Profile ID: LFUS-PAI-P-866057

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