Granted Patent
Utility
US 5,644,235 · App. 08/475,112
Use of audio signals for monitoring sample spinning speeds in nuclear magnetic spectrometers
Inventor:
Laima Baltusis
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jun 7, 1995
Inventor
Laima Baltusis
Assignee (at issue)
Varian, 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.