Granted Patent
Utility
US 4,939,451 · App. 07/294,036
Wide dynamic range a.c. current sensor
Inventors:
Paul Baran, Timothy J. Knutson
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jan 6, 1989
Inventors
Paul Baran
Timothy J. Knutson
Assignee (at issue)
Metricom, 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.