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

Jean-Louis Connan

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Device for forming the hands-free function in a telephone set, a

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

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Electrical disturbance protective device between a terminal and

Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent

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Profile ID: LFUS-PAI-P-1115845

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