Granted Patent
Utility
US 5,667,010 · App. 08/408,156
Process and plug for well abandonment
Inventors:
John Boyd, John Balslev Jorgensen, Victor Freeman Maxwell
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Mar 21, 1995
Inventors
John Boyd
John Balslev Jorgensen
Victor Freeman Maxwell
Assignee (at issue)
Steelhead Reclamation Ltd.
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.