Granted Patent
Utility
US 6,798,595 · App. 09/936,416
Magnetic recording playback device
Inventor:
Kazutoshi Saito
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Nov 26, 2001
Inventor
Kazutoshi Saito
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.