Granted Patent
Utility
US 5,038,232 · App. 07/383,757
Spindle motor control circuit
Inventor:
Alan Grace
Patented Case
View Patent ↗
Granted: Aug 6, 1991
Filed: Jul 19, 1989
Inventor
Alan Grace
Assignee (at issue)
Syquest Technology, Inc.
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.