Granted Patent
Utility
US 5,227,709 · App. 07/594,833
Closed loop single step response by open winding voltage feedback system and method for multiple phase step motors
Inventors:
Raymond G. Gauthier, Ronald T. Whaley
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Oct 9, 1990
Inventors
Raymond G. Gauthier
Ronald T. Whaley
Assignee (at issue)
Seagate Technology 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.