Granted Patent
Utility
US 5,021,773 · App. 07/321,188
Fibre optic display device
Inventor:
John Browne
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Mar 9, 1989
Inventor
John Browne
Assignee (at issue)
NEI Canada 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.