Granted Patent
Utility
US 4,504,195 · App. 06/506,000
Jet pump for oil wells
Inventors:
Richard H. Binks, Frederick C. Christ
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Jun 20, 1983
Inventors
Richard H. Binks
Frederick C. Christ
Assignee (at issue)
Armco 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.