Granted Patent
Utility
US 4,431,951 · App. 06/342,527
Resistance thermal unit for thermal electric energy demand meter
Inventor:
Albert W. Allan
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Jan 25, 1982
Inventor
Albert W. Allan
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.