Granted Patent
Utility
US 6,496,566 · App. 09/675,884
Metallic testing of a subscriber loop that provides both voice and digital subscriber line services
Inventor:
Carl Robert Posthuma
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Sep 29, 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.