Granted Patent
Utility
US 4,629,986 · App. 06/613,402
Nuclear magnetic loggins
Inventors:
Hugh Clow, William S. Percival, Peter E. Walters
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: May 24, 1984
Inventors
Hugh Clow
William S. Percival
Peter E. Walters
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.