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Tandem Access Controller Within The Public Switched Telephone Network

13/358,353 | U.S. Patent Application

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Location ELECTRONIC
Filed Jan. 25, 2012
Examiner SONIA L GAY
Class 379
Art Group 2651
Patent No. 8,848,894
Case Type Utility - 379/211010
Status Patented Case
Parent 11/428,822 Patented
Parent 10/426,279 Patented
Parent 09/565,565 Patented
Last Updated: 4 years, 3 months ago
Date # Transaction