Granted Patent
Utility
US 6,459,773 · App. 09/565,145
System to pre-qualify copper subscriber loops for high bandwidth access service using subscriber or network generated tones
Inventor:
Carl Robert Posthuma
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: May 5, 2000
Inventor
Carl Robert Posthuma
Assignee (at issue)
LUCENT 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.