Granted Patent
Utility
US 4,547,698 · App. 06/191,581
Magnetic deflection field enhancer means for television CRT electron guns
Inventors:
Norman F. Gioia, Fred H. Seher
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Sep 29, 1980
Inventors
Norman F. Gioia
Fred H. Seher
Assignee (at issue)
Zenith Electronics LLC
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.