Granted Patent
Utility
US 5,287,038 · App. 07/884,523
High resolution electron gun
Inventors:
Robert A. Hagar, Arthur J. Ingle
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: May 14, 1992
Inventors
Robert A. Hagar
Arthur J. Ingle
Assignee (at issue)
Litton Systems, Inc.
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.