LandOfFree - US Patents - Listing for Telephonic communications,Plural exchange network or interconnection

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Translation indicator for database-queried communications servic

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing

Patent

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Transmission apparatus for relaying different types of trunk sig

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Patent

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Transmission device control system equipped with...

Telephonic communications – Plural exchange network or interconnection

Reexamination Certificate

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Transmission of originator subscriber number after communication

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Patent

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Transmission path selection circuit in a telecommunication netwo

Telephonic communications – Plural exchange network or interconnection – Connection call model

Patent

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Transparent inband signaling

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Patent

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Transparent protected access to corporate dialing plan

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing

Patent

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Trunk apparatus for loop dialing trunk line

Telephonic communications – Plural exchange network or interconnection

Patent

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Trunk design optimization for public switched telephone network

Telephonic communications – Plural exchange network or interconnection

Reexamination Certificate

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Trunk interface circuitry for telephone systems

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Patent

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Trunk utilization in a telecommunications network

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Patent

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Two way transmission of subscriber provisional data for an...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Reexamination Certificate

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