Granted Patent
Utility
US 5,081,613 · App. 07/250,036
Method of identification of well damage and downhole irregularities
Inventors:
Gary R. Holzhausen, Gregory S. Baker, Howard N. Egan
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Sep 27, 1988
Inventors
Gary R. Holzhausen
Gregory S. Baker
Howard N. Egan
Assignee (at issue)
Applied Geomechanics 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.