Granted Patent
Utility
US 4,812,928 · App. 07/085,117
Stepper motor data recovery method using a magnetic hysteresis based stepping algorithm
Inventor:
James N. Krause
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Aug 14, 1987
Inventor
James N. Krause
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.