Granted Patent
Utility
US 4,833,043 · App. 07/072,410
Amorphous magneto optical recording medium
Inventor:
Richard Neal Gardner
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Jul 13, 1987
Inventor
Richard Neal Gardner
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.