Granted Patent
Utility
US 5,889,835 · App. 08/969,381
Method and system for testing a transmission line in a non-addressable network for continuity
Inventor:
Daniel L. Estes
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Nov 13, 1997
Inventor
Daniel L. Estes
Assignee (at issue)
BellSouth Corporation
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.