Granted Patent
Utility
US 4,385,333 · App. 06/174,965
Magnetic disc drive system
Inventor:
Alfred Hasler
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Aug 4, 1980
Inventor
Alfred Hasler
Assignee (at issue)
International Memories, 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.