Granted Patent
Utility
US 5,091,697 · App. 07/388,579
Low power, high accuracy magnetometer and magnetic field strength measurement method
Inventors:
Stephen Roth, Roar Berg-johansen
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Jul 31, 1989
Inventors
Stephen Roth
Roar Berg-johansen
Assignee (at issue)
II Morrow 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.