Granted Patent
Utility
US 6,359,388 · App. 09/649,010
Cold cathode ion beam deposition apparatus with segregated gas flow
Inventor:
Rudolph Hugo Petrmichl
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Aug 28, 2000
Inventor
Rudolph Hugo Petrmichl
Assignee (at issue)
Guardian Industries Corp.
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.