4. Telecommunications
  5. Transmitter and receiver at same station
  6. Radiotelephone equipment detail

John Matthew Gafrick

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Apparatus method and system for roamer originated automatic...

Multiplex communications – Special services – Conferencing
Reexamination Certificate

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Apparatus, method and system for automatic telecommunication...

Multiplex communications – Special services – Conferencing
Reexamination Certificate

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Apparatus, method and system for providing a default mode...

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate

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Handover of wireless calls between systems supporting...

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

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Method and apparatus for re-establishing a call in a...

Telecommunications – Radiotelephone system – Emergency or alarm communication
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Profile ID: LFUS-PAI-P-1324050

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