4. Telephonic communications
  5. Audio message storage, retrieval, or synthesis
  6. Multilingual system or operation

Yuji Sumi

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Digital radiotelephone system

Multiplex communications – Wide area network – Packet switching
Patent

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Information service apparatus

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Optical pickup device with dual grating element

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent

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Optical reproducing apparatus

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent

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Profile ID: LFUS-PAI-P-68245

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