4. Telecommunications
  5. Radiotelephone system
  6. Zoned or cellular telephone system

Derek A. Oxley

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Method and apparatus for group call services

Multiplex communications – Special services – Conferencing
Reexamination Certificate

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Method for feature transfer in a telecommunication network

Telephonic communications – Special services
Reexamination Certificate

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Session initiation protocol retransmission method

Multiplex communications – Communication over free space – Repeater
Reexamination Certificate

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System and technique for plane switchover in an aircraft...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2713874

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