Granted Patent
Utility
US 4,137,548 · App. 05/783,478
Method and apparatus for optimizing color purity in a color kinescope
Inventors:
William R. Kelly, Robert L. Barbin
Patented Case
View Patent ↗
Granted: Jan 30, 1979
Filed: Mar 31, 1977
Inventors
William R. Kelly
Robert L. Barbin
Assignee (at issue)
RCA 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.