Granted Patent
Utility
US 4,786,844 · App. 07/031,618
Wire ion plasma gun
Inventors:
Sherman R. Farrell, Richard R. Smith
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Mar 30, 1987
Inventors
Sherman R. Farrell
Richard R. Smith
Assignee (at issue)
RPC Industries
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.