Granted Patent
Utility
US 6,756,781 · App. 10/294,905
Sensor for optically measuring magnetic fields
Inventors:
Paul Duncan, John Schroeder
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Nov 15, 2002
Inventors
Paul Duncan
John Schroeder
Assignee (at issue)
Airak, 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.