Granted Patent
Utility
US 6,330,672 · App. 09/108,135
Method and apparatus for watermarking digital bitstreams
Inventor:
David Hilton Shur
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Jun 30, 1998
Inventor
David Hilton Shur
Assignee (at issue)
AT&T CORP.
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.