Granted Patent
Utility
US 6,618,469 · App. 10/068,687
Circuits and methods for testing POTS service
Inventors:
Jie Wang, Christopher Smith
Patented Case
View Patent ↗
Granted: Sep 9, 2003
Filed: Feb 5, 2002
Inventors
Jie Wang
Christopher Smith
Assignee (at issue)
ADC DSL Systems, 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.