Granted Patent
Utility
US 5,229,976 · App. 07/788,406
Method for creating a numerical model of the physical properties within the earth
Inventors:
Mark Boyd, Douglas W. Hanson
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Nov 6, 1991
Inventors
Mark Boyd
Douglas W. Hanson
Assignee (at issue)
Conoco 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.