Granted Patent
Utility
US 5,448,760 · App. 08/074,083
Cellular telephone anti-fraud system
Inventor:
Max B. Frederick
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Jun 8, 1993
Inventor
Max B. Frederick
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.