Granted Patent
Utility
US 5,019,712 · App. 07/363,230
Production of focused ion cluster beams
Inventor:
Wolfgang Knauer
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Jun 8, 1989
Inventor
Wolfgang Knauer
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.