Granted Patent
Utility
US 5,305,447 · App. 07/738,584
Multi-task operating system for a disc drive
Inventor:
Randall D. Hampshire
Patented Case
View Patent ↗
Granted: Apr 19, 1994
Filed: Jul 31, 1991
Inventor
Randall D. Hampshire
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.