Granted Patent
Utility
US 4,500,816 · App. 06/477,209
Convergence control apparatus for color cathode ray tube display systems
Inventor:
Charles J. Murphy
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Mar 21, 1983
Inventor
Charles J. Murphy
Assignee (at issue)
Sperry Corp.
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.