Granted Patent
Utility
US 4,521,840 · App. 06/466,267
D-C Bus current monitoring system
Inventor:
Frederick L. Hoadley
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Feb 14, 1983
Inventor
Frederick L. Hoadley
Assignee (at issue)
BorgWarner 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.