Granted Patent
Utility
US 4,288,718 · App. 06/042,280
Means and method for beam spot distortion compensation in TV picture tubes
Inventors:
Allen P. Blacker, Arthur J. Ingle
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: May 24, 1979
Inventors
Allen P. Blacker
Arthur J. Ingle
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.