Granted Patent
Utility
US 4,316,702 · App. 06/130,977
Oil well control circuit
Inventors:
John W. Kiowski, Jr., John Rolando
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Mar 17, 1980
Inventors
John W. Kiowski, Jr.
John Rolando
Assignee (at issue)
Electronic Systems Division, Geosource, 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.