Granted Patent
Utility
US 4,845,749 · App. 07/135,917
Secure teleconferencing system
Inventors:
Ernest Brickell, Pil J. Lee, Yacov Yacobi
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Dec 21, 1987
Inventors
Ernest Brickell
Pil J. Lee
Yacov Yacobi
Assignee (at issue)
Bell Communications Research, 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.