Granted Patent
Utility
US 6,815,690 · App. 10/200,553
Ion beam source with coated electrode(s)
Inventors:
Vijayen S. Veerasamy, Rudolph Hugo Petrmichl, Henry Luten
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jul 23, 2002
Inventors
Vijayen S. Veerasamy
Rudolph Hugo Petrmichl
Henry Luten
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.