Granted Patent
Utility
US 5,646,999 · App. 08/549,271
Data coypright management method
Inventor:
Makoto Saito
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Oct 27, 1995
Inventor
Makoto Saito
Assignee (at issue)
MITSUBISHI 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.