Telephone information service system using digital and out-of-band signaling

Assignee

• AT&T

Inventors

• Marjorie S. Backaus (3 patents)
• Claire Darcelle Barrera (2 patents)
• Esther L. Davenport (6 patents)
• Harold Fahrer (5 patents)
• Barry Norman Ostroff (2 patents)
• Robert Petrelli (7 patents)
• Susan Kay Sonke (2 patents)

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