Granted Patent
Utility
US 6,266,210 · App. 09/377,189
Magnetic recording and reading device
Inventor:
Yoshihiro Shiroishi
Patented Case
View Patent ↗
Granted: Jul 24, 2001
Filed: Aug 19, 1999
Inventor
Yoshihiro Shiroishi
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.