Granted Patent
Utility
US 6,578,634 · App. 09/945,924
Method of monitoring pumping operations of a service vehicle at a well site
Inventor:
Frederic M. Newman
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Sep 5, 2001
Inventor
Frederic M. Newman
Assignee (at issue)
KEY ENERGY SERVICES, LLC
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.