LandOfFree - US Patents - Listing for Cryptography,Communication system using cryptography,Circuit switched network

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Audio scrambling system for scrambling and descrambling audio si

Cryptography – Communication system using cryptography – Circuit switched network

Patent

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Automatic telephone-line disconnect system

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Current-sensitive telephone-line disconnect system

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Encryption and authentication methods and apparatus for...

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Expanded partial response processing for analog signal encipheri

Cryptography – Communication system using cryptography – Circuit switched network

Patent

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Method and an apparatus to perform secure real-time...

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Method and apparatus for providing secured communication...

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Method and apparatus for transporting encrypted media...

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Method and system for calling line authenticated key...

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Random number generator based on turbulent convection

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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System and method for securing voice mail messages

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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System and method for video stream encryption

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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System and method for video stream encryption

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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System providing dynamic quality of service signaling...

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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Systems and methods for recording an encrypted interaction

Cryptography – Communication system using cryptography – Circuit switched network

Reexamination Certificate

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