Granted Patent
Utility
US 4,596,926 · App. 06/474,367
Formation density logging using multiple detectors and sources
Inventor:
Daniel F. Coope
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Mar 11, 1983
Inventor
Daniel F. Coope
Assignee (at issue)
NL Industries, 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.