Granted Patent
Utility
US 6,219,420 · App. 09/146,065
High assurance encryption system and method
Inventors:
Douglas A. Hardy, Steven R. Tugenberg
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Sep 2, 1998
Inventors
Douglas A. Hardy
Steven R. Tugenberg
Assignee (at issue)
Motorola, 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.