4. Telephonic communications
  5. With usage measurement
  6. Call charge metering or monitoring

Kouki Shigaki

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Credit calling service system

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Data transfer making efficient use of time concerning bus...

Electrical computers and digital data processing systems: input/ – Access arbitrating
Reexamination Certificate

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Profile ID: LFUS-PAI-P-703340

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