Granted Patent
Utility
US 4,591,810 · App. 06/590,110
Pulse width modulator for electronic watthour metering
Inventors:
Raymond W. Mackenzie, Theodore M. Heinrich
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Mar 19, 1984
Inventors
Raymond W. Mackenzie
Theodore M. Heinrich
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.