Granted Patent
Utility
US 5,216,330 · App. 07/821,394
Ion beam gun
Inventor:
Robert G. Ahonen
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Jan 14, 1992
Inventor
Robert G. Ahonen
Assignee (at issue)
Honeywell Limited
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.