Granted Patent
Utility
US 4,630,243 · App. 06/477,262
Apparatus and method for logging wells while drilling
Inventor:
Norman C. MacLeod
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Mar 21, 1983
Inventor
Norman C. MacLeod
Assignee (at issue)
MacLeod Laboratories, 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.