4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Magnetic recorder or player

Katsumi Koshimura

Inventor

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Combined tape recorder and radio receiver

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Magnetic recorder or player
Patent

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Communication terminal device

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

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Flat speaker unit

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent

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Profile ID: LFUS-PAI-P-1840192

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