Granted Patent
Utility
US 6,005,934 · App. 08/772,673
Simulating changes in telephone subscriber line
Inventor:
David A. Pepper
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Dec 20, 1996
Inventor
David A. Pepper
Assignee (at issue)
Nortel Networks Limited
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.