4. Amplifiers
  5. With semiconductor amplifying device
  6. Including particular power supply circuitry

Rudolph H. Engelmann

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Battery charger

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent

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Dual priority temperature control

Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent

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End of charge detector

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent

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High efficiency power amplifier

Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry
Patent

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Indicia producing method

Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent

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Profile ID: LFUS-PAI-P-28222

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