Granted Patent
Utility
US 4,733,113 · App. 07/011,487
Winding for operation of a three-phase stepping motor from a two-phase drive
Inventor:
Robert C. Smith
Patented Case
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Granted: Mar 22, 1988
Filed: Feb 5, 1987
Inventor
Robert C. Smith
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.