4. Communications: electrical
  5. Continuously variable indicating
  6. With meter reading

Timothy A. Grothause

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Communication device capable of ambient sound level controlled t

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Method and apparatus for adjusting the volume level of a radio

Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Patent

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Radio with message reception and ambient noise level controlled

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Profile ID: LFUS-PAI-P-333228

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