Granted Patent
Utility
US 4,370,593 · App. 06/221,434
In-line electron gun and method for modifying the same
Inventors:
Raymond H. Sweigart, Mary E. Doersom
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Dec 30, 1980
Inventors
Raymond H. Sweigart
Mary E. Doersom
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.