Granted Patent
Utility
US 3,969,650 · App. 05/527,569
Gas discharge display device and a novel hollow cathode therefor
Inventors:
Gerald J. Chodil, Michael C. DeJule, David M. Glaser
Patented Case
View Patent ↗
Granted: Jul 13, 1976
Filed: Nov 27, 1974
Inventors
Gerald J. Chodil
Michael C. DeJule
David M. Glaser
Assignee (at issue)
Zenith Radio Corporation
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.