Granted Patent
Utility
US 4,835,652 · App. 07/215,690
Bi-directional DC power controller with fault protection
Inventors:
William W. Billings, David A. Fox
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Jul 6, 1988
Inventors
William W. Billings
David A. Fox
Assignee (at issue)
Westinghouse Electric Company LLC
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.