Granted Patent
Utility
US 5,152,907 · App. 07/704,915
Solvent systems for use in oil and gas wells
Inventors:
Clarence L. Dulaney, Michael C. Lysandrou
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: May 21, 1991
Inventors
Clarence L. Dulaney
Michael C. Lysandrou
Assignee (at issue)
Amoco 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.