Granted Patent
Utility
US 5,117,909 · App. 07/603,571
Well conduit sealant and placement method
Inventors:
Bonsall S. Wilton, J. Benjamin Bloys, Roger D. Bradshaw, Kenneth R. Riggs
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Oct 25, 1990
Inventors
Bonsall S. Wilton
J. Benjamin Bloys
Roger D. Bradshaw
Kenneth R. Riggs
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.