4. Multiplex communications
  5. Special services
  6. Conferencing

Christopher J. Donley

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Authentication mechanism for telephony devices

Telecommunications – Radiotelephone system – Security or fraud prevention
Reexamination Certificate

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Method and apparatus for allowing communication within a group

Multiplex communications – Special services – Conferencing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2290093

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