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

Roger William Berg

Inventor

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Interoperable am/fm headset wireless telephone device

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Method and apparatus for powering a wireless headset used...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Portable radio transceiver with diplexer-switch circuit for dual

Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Patent

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Portable receiver including transducer for notifying user of mes

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent

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Quick release battery and clip for portable device and...

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – For battery pack
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1726798

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