Granted Patent
Utility
US 6,819,744 · App. 09/676,740
System and circuitry for measuring echoes on subscriber loops
Inventors:
Thomas Banwell, Stefano Galli
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Sep 29, 2000
Inventors
Thomas Banwell
Stefano Galli
Assignee (at issue)
Telcordia Technologies, 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.