Granted Patent
Utility
US 6,580,722 · App. 09/138,586
Bypassing topological restrictions with tunnels
Inventor:
Radia J. Perlman
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Aug 21, 1998
Inventor
Radia J. Perlman
Assignee (at issue)
Sun Microsystems Inc.
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.