Granted Patent
Utility
US 6,653,839 · App. 10/032,981
Electrical measurement apparatus and method for measuring an electrical characteristic of an earth formation
Inventors:
Michael Yuratich, Andrew Jewell
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Dec 28, 2001
Inventors
Michael Yuratich
Andrew Jewell
Assignee (at issue)
Computalog USA 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.