Granted Patent
Utility
US 4,509,128 · App. 06/369,058
Solid-state electrical-power demand register and method
Inventors:
Richard Coppola, George H. Stephens
Patented Case
View Patent ↗
Granted: Apr 2, 1985
Filed: Apr 16, 1982
Inventors
Richard Coppola
George H. Stephens
Assignee (at issue)
Sangamo Weston, Inc.
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.