Granted Patent
Utility
US 5,936,330 · App. 08/925,977
Apparatus for preventing filament shorting in a magnetron cathode
Inventor:
Richard Barbier
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Sep 9, 1997
Inventor
Richard Barbier
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.