Granted Patent
Utility
US 6,459,848 · App. 09/120,734
Magnetic recording apparatus and method, and magnetic recording medium
Inventor:
Seiji Higurashi
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Jul 23, 1998
Inventor
Seiji Higurashi
Assignee (at issue)
Victor Company of Japan, 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.