Granted Patent
Utility
US 6,233,221 · App. 09/027,156
System and method for a ring network with virtual path connections
Inventors:
Gregory D. Lowe, Dan Zheng
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Feb 20, 1998
Inventors
Gregory D. Lowe
Dan Zheng
Assignee (at issue)
ADC Telecommunications, 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.