Granted Patent
Utility
US 5,539,632 · App. 08/308,653
Multi-phase and shifted phase power distribution systems
Inventor:
John K. Marsh
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Sep 19, 1994
Inventor
John K. Marsh
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.