Granted Patent
Utility
US 5,963,508 · App. 08/196,621
System and method for determining earth fracture propagation
Inventor:
Robert J. Withers
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Feb 14, 1994
Inventor
Robert J. Withers
Assignee (at issue)
Atlantic Richfield Company
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.