Granted Patent
Utility
US 4,777,542 · App. 06/854,782
Data recording method
Inventor:
Minoru Ozaki
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Apr 22, 1986
Inventor
Minoru Ozaki
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.