4. Communications: electrical
  5. Audible indication
  6. Ultrasonic pest control

Ryohei Oba

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Radio interference detection device for use in a multi-channel a

Telecommunications – Receiver or analog modulated signal frequency converter – Frequency or phase modulation
Patent

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Tone signal generating system for use in communication apparatus

Communications: electrical – Audible indication – Ultrasonic pest control
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Profile ID: LFUS-PAI-P-1100014

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