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Ultra-slim telephone set

Telephonic communications – Terminal – Housing or housing component
Patent

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Ultrasonic proximity detector for a telephone device

Telephonic communications – Having light wave or ultrasonic link for speech or paging...
Reexamination Certificate

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Ultrasonic radiotelephone for an automobile

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

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Ultrasonically-calibrated fast-start echo canceller for...

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate

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Unattended meet-me-conference controlled by a telephone terminal

Telephonic communications – Special services – Conferencing
Patent

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Unauthorized call activity detection and prevention systems...

Telephonic communications – Special services
Reexamination Certificate

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Unauthorized call defeat apparatus

Telephonic communications – Call or terminal access alarm or control – At substation
Patent

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Unbalanced ringing using a balanced ringing generator of a subsc

Telephonic communications – Subscriber line or transmission line interface
Patent

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Unbalanced slic with a built-in ring circuit

Telephonic communications – Substation or terminal circuitry – Power control or detection circuit
Reexamination Certificate

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Unbundling device and method for connecting a competing...

Telephonic communications – Special services – Locating using diverse technology
Reexamination Certificate

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Undetected provision of auxiliary services during a...

Telephonic communications – Special services
Reexamination Certificate

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Unidirectional ear microphone and gasket

Telephonic communications – Terminal – Housing or housing component
Patent

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Unidirectional ear microphone and method

Telephonic communications – Terminal – Housing or housing component
Patent

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Unified communication services via e-mail

Telephonic communications – Audio message storage – retrieval – or synthesis
Reexamination Certificate

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Unified communications automated personal name addressing

Telephonic communications – Reception of calling information at substation in wireline... – Extracting call id from transmitted signal
Reexamination Certificate

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Unified directory for caller ID and electronic mail addresses

Telephonic communications – Reception of calling information at substation in wireline...
Reexamination Certificate

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Unified message system for accessing voice mail via email

Telephonic communications – Audio message storage – retrieval – or synthesis – Interaction with an external nontelephone network
Reexamination Certificate

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Unified messaging architecture

Telephonic communications – Audio message storage – retrieval – or synthesis – Multimedia system
Reexamination Certificate

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Unified messaging system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multimedia system
Reexamination Certificate

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Unified messaging system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multimedia system
Reexamination Certificate

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