Granted Patent
Utility
US 5,938,768 · App. 08/903,376
Feature to facilitate numeric passcode entry
Inventor:
Paul Michael Brennan
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jul 30, 1997
Inventor
Paul Michael Brennan
Assignee (at issue)
Nortel Networks Limited
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.