Granted Patent
Utility
US 5,871,047 · App. 08/909,558
Method for determining well productivity using automatic downtime data
Inventors:
Jeff Spath, Joe M. Mach
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Aug 12, 1997
Inventors
Jeff Spath
Joe M. Mach
Assignee (at issue)
Schlumberger Technology 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.