Granted Patent
Utility
US 4,631,439 · App. 06/469,701
Cathode-ray tube having cylindrical faceplate and shadow mask with minor axis curvatures
Inventors:
Ralph J. D'Amato, Richard H. Godfrey
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Feb 25, 1983
Inventors
Ralph J. D'Amato
Richard H. Godfrey
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.