4. Electrical transmission or interconnection systems
  5. Plural supply circuits or sources
  6. Substitute or emergency source

Kenneth Jay Helfrich

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Apportioning minimal standby power

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent

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Degaussing circuit for wide-range ac

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Pulse storing
Patent

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Electret microphone detection using a current source

Electrical audio signal processing systems and devices – Headphone circuits
Reexamination Certificate

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Standby circuit for a television

Television – Receiver circuitry – Power supply
Patent

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Profile ID: LFUS-PAI-P-1328792

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