Granted Patent
Utility
US 4,634,948 · App. 06/735,209
Stepping motor winding for bipolar drive
Inventor:
Robert N. Brigham
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: May 17, 1985
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.