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

Takuya Kanazumi

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Handsfree unit

Telecommunications – Transmitter and receiver at same station – Convertible
Patent

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Telephone with hands-free operation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Profile ID: LFUS-PAI-P-934684

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