Granted Patent
Utility
US 4,385,259 · App. 06/258,991
Dynamic convergence control apparatus for shadow mask CRT displays
Inventors:
Karl L. Chase, Christopher R. Dusard, James M. Spencer
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Dec 24, 1980
Inventors
Karl L. Chase
Christopher R. Dusard
James M. Spencer
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.