4. Multiplex communications
  5. Wide area network
  6. Packet switching

Masayuki Kawashima

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Data circuit-terminating equipment

Pulse or digital communications – Repeaters – Testing
Patent

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Digital synchronizing circuit

Pulse or digital communications – Spread spectrum – Direct sequence
Patent

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Key telephone system

Multiplex communications – Wide area network – Packet switching
Patent

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Lumber processing apparatus

Woodworking – Process – Including monitoring of operation
Patent

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On-line database duplication with incorporation of concurrent da

Data processing: database and file management or data structures – Database design – Data structure types
Patent

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Profile ID: LFUS-PAI-P-292670

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