Granted Patent
Utility
US 6,085,837 · App. 09/056,697
Downhole fluid disposal tool and method
Inventors:
Roland Massinon, David Hill, Colin A. Aldridge
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Apr 8, 1998
Inventors
Roland Massinon
David Hill
Colin A. Aldridge
Assignee (at issue)
Kudu Industries 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.