Granted Patent
Utility
US 4,949,334 · App. 07/341,551
Protected information transfer system
Inventor:
Keith L. Bernhardt
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Apr 21, 1989
Inventor
Keith L. Bernhardt
Assignee (at issue)
Alcatel NA, 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.