4. Telephonic communications
  5. Substation or terminal circuitry
  6. For loudspeaking terminal

Osamu Kurokawa

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Dual-mode radio communication device having function for...

Pulse or digital communications – Apparatus convertible to analog
Reexamination Certificate

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Dual-mode radio connected to an apparatus for communicating...

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

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Hands-free circuitry providing audio signal adjustment based on

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

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Handsfree unit

Telecommunications – Transmitter and receiver at same station – Convertible
Patent

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Mobile radio communication apparatus having a plurality of MINs

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

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Profile ID: LFUS-PAI-P-934683

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