4. Telecommunications
  5. Receiver or analog modulated signal frequency converter
  6. Signal selection based on frequency

Hiroshi Katsunaga

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AM intermediate frequency variable gain amplifier circuit,...

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate

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Receiver of double conversion system with antenna tuning...

Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3023182

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