4. Communications: electrical
  5. Audible indication
  6. Percussion-type sound producer

Kenji Kumasaka

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Eddy current testing apparatus and eddy current testing method

Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate

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Signal processing apparatus

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Ultrasonic testing apparatus for turbine forks and method...

Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1554943

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