Granted Patent
Utility
US 5,223,790 · App. 07/698,508
Current sensor using current transformer with sintered primary
Inventors:
Paul Baran, Ronald S. Palmer
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: May 10, 1991
Inventors
Paul Baran
Ronald S. Palmer
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.