Granted Patent
Utility
US 5,003,593 · App. 07/361,898
Teleconferencing method for a secure key management system
Inventor:
Thomas J. Mihm, Jr.
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Jun 5, 1989
Inventor
Thomas J. Mihm, Jr.
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.