4. Telephonic communications
  5. Substation or terminal circuitry
  6. For loudspeaking terminal

Jean-Philippe Boyer

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Electrostatic-shutter tube with field-conforming shutter electro

Electric lamp and discharge devices – Photosensitive – Having phosphor screen
Patent

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Fuzzy logic device for automatic sound control

Electrical audio signal processing systems and devices – Monitoring of sound – Amplification control responsive to ambient sound
Patent

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Telephone set which can be adjusted in response to ambient noise

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Profile ID: LFUS-PAI-P-632967

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