Granted Patent
Utility
US 6,740,414 · App. 10/371,596
Magnetic recording media and magnetic recording apparatus used thereof
Inventor:
Toru Yatsue
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Feb 20, 2003
Inventor
Toru Yatsue
Assignee (at issue)
HITACHI, LTD.
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.