Granted Patent
Utility
US 4,663,587 · App. 06/782,772
Electronic circuit for measuring electrical energy
Inventor:
Raymond W. Mackenzie
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Oct 2, 1985
Inventor
Raymond W. Mackenzie
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.