Granted Patent
Utility
US 4,570,101 · App. 06/529,742
Cathode-ray tube having a faceplate panel with a smooth aspherical screen surface
Inventor:
Francis J. Campbell
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Sep 6, 1983
Inventor
Francis J. Campbell
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.