4. Telecommunications
  5. Receiver or analog modulated signal frequency converter
  6. Frequency modifying or conversion

Francois Callias

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Method for operating a wireless audio signal receiver unit...

Electrical audio signal processing systems and devices – Hearing aids – electrical – Remote control – wireless – or alarm
Reexamination Certificate

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Micro-receiver for receiving a high frequency frequency-modulate

Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent

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Switched amplifier

Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent

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Profile ID: LFUS-PAI-P-146857

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