4. Typewriting machines
  5. Plural-key-actuated typewriter

American Tel-A-System , Inc.

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Data input device using combined numeric inputs to encode charac

Typewriting machines – Plural-key-actuated typewriter
Patent

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Telephone answering service with integrated voice and textual me

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Telephone answering service with integrated voice and textual me

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Telephone number/Web page look-up apparatus and method

Telephonic communications – Centralized switching system – Call distribution to operator
Patent

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