Granted Patent
Utility
US 5,905,949 · App. 08/576,116
Cellular telephone fraud prevention system using RF signature analysis
Inventors:
Kelly Davidson Hawkes, Michael Shaw McKinley, Kenneth I. Talbot
Patented Case
View Patent ↗
Granted: May 18, 1999
Filed: Dec 21, 1995
Inventors
Kelly Davidson Hawkes
Michael Shaw McKinley
Kenneth I. Talbot
Assignee (at issue)
Corsair Communications, Inc.
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.