4. Telecommunications
  5. Radiotelephone system
  6. Usage measurement

John M. Leslein

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Prepaid services accounts with multi-user customers and...

Telephonic communications – With usage measurement
Reexamination Certificate

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Systems and methods for providing multiple simultaneous...

Telecommunications – Radiotelephone system – Usage measurement
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2336870

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