Granted Patent
Utility
US 4,864,559 · App. 07/249,958
Method of multicast message distribution
Inventor:
Radia J. Perlman
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Sep 27, 1988
Inventor
Radia J. Perlman
Assignee (at issue)
Digital Equipment 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.