Granted Patent
Utility
US 5,949,878 · App. 08/673,348
Method and apparatus for providing voice privacy in electronic communication systems
Inventors:
Robert J. Burdge, Steven P. Poulsen
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Jun 28, 1996
Inventors
Robert J. Burdge
Steven P. Poulsen
Assignee (at issue)
Transcrypt International, 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.