Granted Patent
Utility
US 4,896,239 · App. 07/259,457
Bi-compliant rotor stepper motor for an actuator in a disc drive
Inventor:
Sanjoy Ghose
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Oct 17, 1988
Inventor
Sanjoy Ghose
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.