Granted Patent
Utility
US 6,052,574 · App. 09/102,177
Auxiliary monitoring of emergency access calls
Inventor:
Harold Robert Smith, Jr.
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Jun 22, 1998
Inventor
Harold Robert Smith, Jr.
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.