4. Telephonic communications
  5. Having light wave or ultrasonic link for speech or paging...
  6. Including fiber optic link within telephone network

Seo-Won Kang

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Automatic answering method for a vehicle radio-telephone and dev

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent

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Circuit for generating dual-tone multi-frequency signals and hig

Telephonic communications – Special services – Anonymous party
Patent

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Overdischarge and overvoltage protection circuit for a battery i

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

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Profile ID: LFUS-PAI-P-1160672

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