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Selected: C

Call and data correspondence in a call-in center employing...

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Call and data correspondence in a call-in center employing...

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Call announcement arrangement

Telephonic communications – Audio message storage – retrieval – or synthesis
Patent

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Call announcement arrangement

Telephonic communications – Audio message storage – retrieval – or synthesis
Patent

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Call answering

Telephonic communications – Special services – Call diversion
Reexamination Certificate

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Call appearance reservation arrangement

Telephonic communications – Special services – Anonymous party
Patent

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Call arrangement and connection using messaging

Telephonic communications – Special services – Conferencing
Reexamination Certificate

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Call authorization and billing message routing capability

Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate

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Call back method

Telephonic communications – Special services – Reserved call
Reexamination Certificate

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Call back service for a regulatory restrictive area

Telephonic communications – Special services – Repetitive call attempts
Patent

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Call billing and measurement methods for redirected calls

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Call block disabler

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

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Call blocking based on call properties

Telephonic communications – With check operated control – Other than coin
Reexamination Certificate

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Call blocking device and methods

Telephonic communications – Reception of calling information at substation in wireline... – Extracting call id from transmitted signal
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Call blocking system

Telephonic communications – Call or terminal access alarm or control – At switching center
Reexamination Certificate

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Call box

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

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Call box with keyboard communication

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

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Call branding system

Telephonic communications – Special services – Call diversion
Patent

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Call center administration manager

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Call center administration manager

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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