Granted Patent
Utility
US 6,544,635 · App. 09/954,045
Magnetic recording medium
Inventor:
Kenichi Kikuchi
Patented Case
View Patent ↗
Granted: Apr 8, 2003
Filed: Sep 18, 2001
Inventor
Kenichi Kikuchi
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.