Granted Patent
Utility
US 4,755,722 · App. 07/022,123
Ion plasma electron gun
Inventor:
George Wakalopulos
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Mar 5, 1987
Inventor
George Wakalopulos
Assignee (at issue)
RPC Industries
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.