Granted Patent
Utility
US 6,252,962 · App. 08/392,336
Featureless covert communication system
Inventor:
William E. Sagey
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Feb 2, 1995
Inventor
William E. Sagey
Assignee (at issue)
Raytheon Company
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.