Granted Patent
Utility
US 6,826,258 · App. 10/176,014
System and method for pre-qualification of telephone lines for DSL service using an average loop loss
Inventor:
Muhammad A. Afzal
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Jun 20, 2002
Inventor
Muhammad A. Afzal
Assignee (at issue)
Teradyne, 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.