Granted Patent
Utility
US 5,843,569 · App. 08/804,797
Magnetic recording medium and device
Inventors:
Isatake Kaitsu, Iwao Okamoto
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Feb 24, 1997
Inventors
Isatake Kaitsu
Iwao Okamoto
Assignee (at issue)
Fujitsu Limited
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.