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

Philip G. Franklin

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Apparatus and method for a cellular freeway emergency telephone

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

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Apparatus and method for a cellular freeway emergency telephone

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

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Apparatus and method for hands free telephonic communication

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

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Method and apparatus for the zonal transmission of data...

Optical communications – Optical communication over freee space – In an office environment
Reexamination Certificate

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Profile ID: LFUS-PAI-P-347368

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