Granted Patent
Utility
US 4,250,552 · App. 06/073,825
AC Electric energy meter utilizing a counter as an integrator
Inventor:
Robert T. Elms
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Sep 10, 1979
Inventor
Robert T. Elms
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.