Granted Patent
Utility
US 5,458,200 · App. 08/263,594
System for monitoring gas lift wells
Inventors:
David L. Lagerlef, Jerry L. Brady, Stephen Gerlek, Charles M. Hightower, Raymond Wydrinksi
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: Jun 22, 1994
Inventors
David L. Lagerlef
Jerry L. Brady
Stephen Gerlek
Charles M. Hightower
Raymond Wydrinksi
Assignee (at issue)
Atlantic Richfield Company
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.