Granted Patent
Utility
US 4,954,740 · App. 07/112,781
Stator winding for two-speed electrodynamic machines having fractional speed ratios
Inventor:
Robert N. Brigham
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Oct 27, 1987
Inventor
Robert N. Brigham
Assignee (at issue)
Superior Electron, 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.