Granted Patent
Utility
US 6,292,539 · App. 09/086,386
Method and apparatus for digital subscriber loop qualification
Inventors:
Elliot G. Eichen, David Brooks
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: May 29, 1998
Inventors
Elliot G. Eichen
David Brooks
Assignee (at issue)
Verizon Laboratories 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.