Granted Patent
Utility
US 4,470,014 · App. 06/408,281
NMR Spectroscopy
Inventors:
Malcolm Harris Levitt, Thomas A. Frenkiel
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Aug 16, 1982
Inventors
Malcolm Harris Levitt
Thomas A. Frenkiel
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.