Granted Patent
Utility
US 6,597,658 · App. 09/274,188
Hierarchical telecommunications network with fault recovery
Inventor:
Jane Marie Simmons
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Mar 22, 1999
Inventor
Jane Marie Simmons
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.