4. Telephonic communications
  5. Call or terminal access alarm or control
  6. At switching center

Koki Tsuruhara

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Line selection method and line selection system for private...

Telephonic communications – Call or terminal access alarm or control – At switching center
Reexamination Certificate

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Method and system for controlling outside incoming call...

Telephonic communications – Plural exchange network or interconnection – Multi-pbx interconnection
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2251630

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