Granted Patent
Utility
US 6,493,124 · App. 09/361,936
Looping back signals in optical switches
Inventor:
Ronald A. Haberkorn
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Jul 27, 1999
Inventor
Ronald A. Haberkorn
Assignee (at issue)
Tellabs Operations, 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.