4. Electrical audio signal processing systems and devices
  5. Including frequency control
  6. Having crossover filter

In-don Ju

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Apparatus and method for controlling battery discharge...

Electricity: battery or capacitor charging or discharging – Battery or cell discharging – With charging
Reexamination Certificate

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Method of selecting a frequency band of an output audio...

Electrical audio signal processing systems and devices – Including frequency control – Having crossover filter
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2920957

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