Granted Patent
Utility
US 4,616,157 · App. 06/759,465
Injector for negative ions
Inventors:
Harry E. Naylor, Kenneth H. Purser
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Jul 26, 1985
Inventors
Harry E. Naylor
Kenneth H. Purser
Assignee (at issue)
General Ionex Corporation
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.