Granted Patent
Utility
US 4,463,255 · App. 06/450,819
Apparatus for enhanced neutralization of positively charged ion beam
Inventors:
David A. Robertson, Norman L. Turner
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Dec 20, 1982
Inventors
David A. Robertson
Norman L. Turner
Assignee (at issue)
Varian, Inc.
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.