Granted Patent
Utility
US 6,644,403 · App. 10/019,933
Method and device for the measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir
Inventors:
Thierry Pichery, Christian Sirieix
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jan 7, 2002
Inventors
Thierry Pichery
Christian Sirieix
Assignee (at issue)
Gaz de France
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.