Granted Patent
Utility
US 4,862,074 · App. 07/258,297
Polyphase volt-hour indicating circuit
Inventor:
Scott J. Weikel
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Oct 14, 1988
Inventor
Scott J. Weikel
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.