Granted Patent
Utility
US 6,069,952 · App. 08/536,747
Data copyright management system
Inventors:
Makoto Saito, Shunichi Momiki
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Sep 29, 1995
Inventors
Makoto Saito
Shunichi Momiki
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.