4. Recording, communication, or information retrieval equipment
  5. Computer, data processor equipment

Comdial Corporation

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Digital multitone generator for telephone dialing

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Digital multitone generator for telephone dialing

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Dynamic telephone configuration

Telephonic communications – Special services
Reexamination Certificate

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Method, system, and computer program product for extending...

Telecommunications – Radiotelephone system – Special service
Reexamination Certificate

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System and method for diagnostic supervision of internet...

Multiplex communications – Diagnostic testing – Of a switching system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-617976

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