Granted Patent
Utility
US 4,743,814 · App. 07/011,535
Static power conversion for adding DC motors
Inventor:
Edwin W. Sankey
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Feb 6, 1987
Inventor
Edwin W. Sankey
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.