Granted Patent
Utility
US 4,471,267 · App. 06/388,289
Grid structure for certain plural mode electron guns
Inventor:
Kurt Amboss
Patented Case
View Patent ↗
Granted: Sep 11, 1984
Filed: Jun 14, 1982
Inventor
Kurt Amboss
Assignee (at issue)
Hughes Aircraft Company
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.