Granted Patent
Utility
US 5,528,693 · App. 08/184,100
Method and apparatus for voice encryption in a communications system
Inventor:
Raymond J. Leopold
Patented Case
View Patent ↗
Granted: Jun 18, 1996
Filed: Jan 21, 1994
Inventor
Raymond J. Leopold
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.