Security system for terminating fraudulent telephone calls | Patent Number 05463681

US 05463681 NA
Application Number8174927
Publication Number-
Pendency1 year, 10 months, 6 days
Filled DateDec 29, 1993
Priority DateDec 29, 1993
Publication Date-
Expiration DateDec 29, 2013
Inventor/Applicants Christos I. Vaios
Alan E. Malinowski
Dimitri N. Diliani
ExaminesWOLINSKY, SCOTT
Art Unit2601
Technology Center2600
Assignments
At&t Company
Current
At&t ServicesAt&t Company
Original
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