Granted Patent
Utility
US 4,704,565 · App. 06/832,568
Dynamically converging electron gun system
Inventors:
Allen P. Blacker, John A. Christensen, Khem Garewal
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Feb 21, 1986
Inventors
Allen P. Blacker
John A. Christensen
Khem Garewal
Assignee (at issue)
Zenith Electronics LLC
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.