Granted Patent
Utility
US 4,490,647 · App. 06/445,209
Gas-filled dot matrix display panel
Inventor:
Nicholas C. Andreadakis
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Nov 29, 1982
Inventor
Nicholas C. Andreadakis
Assignee (at issue)
Burroughs, 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.