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

Yasushi Ueshima

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Authentication method, authentication system and recording...

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

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Call-connecting device, call-connecting method,...

Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate

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Optical-axis deflection type laser interferometer,...

Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2725184

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