Granted Patent
Utility
US 4,999,569 · App. 07/401,708
Method to calibrate magneto-optic based metering system
Inventor:
Scott J. Weikel
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Sep 1, 1989
Inventor
Scott J. Weikel
Assignee (at issue)
ABB Power T&D Company 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.