4. Telephonic communications
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Video teleconferencing system

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

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Video teleconferencing system employing aspect ratio transformat

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

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Video 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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Video telephone employing pulse width modulation for data transm

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

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Video telephone system

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

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Video telephony dialing

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

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Video transmission and control system utilizing internal...

Telephonic communications – Telephone line or system combined with diverse electrical...
Reexamination Certificate

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Video transmission and control system utilizing internal...

Telephonic communications – Telephone line or system combined with diverse electrical...
Reexamination Certificate

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Video transmission and control system utilizing internal...

Telephonic communications – Telephone line or system combined with diverse electrical...
Reexamination Certificate

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Video voice separation system

Telephonic communications – Subscriber line or transmission line interface
Reexamination Certificate

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Video-telephone communications system

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

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Video/audio communications call center and method of operation t

Telephonic communications – Centralized switching system – Call distribution to operator
Patent

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Videophone network system

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

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Videophone with detachable TV camera

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

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Videotelephone apparatus for transmitting high and low resolutio

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

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Videotex terminal apparatus using an IBM PC XT

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent

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Videotex terminal for receiving telecopies

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent

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Videotex with telephone call screening system

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent

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Viewing angle compensation of LCD display

Telephonic communications – Substation or terminal circuitry – Visual signalling
Patent

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Viewing shield for a telephone dialing pad

Telephonic communications – Terminal accessory or auxiliary equipment – Attachable to terminal housing
Patent

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