Granted Patent
Utility
US 5,566,234 · App. 08/530,067
Method for controlling fraudulent telephone calls
Inventors:
Elaine E. Reed, Cynthia A. Edge
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Sep 19, 1995
Inventors
Elaine E. Reed
Cynthia A. Edge
Assignee (at issue)
MCI Communications Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.