Granted Patent
Utility
US 6,587,943 · App. 09/204,930
Apparatus and method for limiting unauthorized access to a network multicast
Inventor:
Thomas P. Hardjono
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Dec 3, 1998
Inventor
Thomas P. Hardjono
Assignee (at issue)
Nortel Networks Limited
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.