Granted Patent
Utility
US 6,792,080 · App. 09/584,379
System and method for testing enhanced 911 signalling over a digital loop carrier trunk
Inventors:
Anthony J. Imperato, David Reagan Rice, Shan Yueh
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: May 31, 2000
Inventors
Anthony J. Imperato
David Reagan Rice
Shan Yueh
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.