Granted Patent
Utility
US 5,559,871 · App. 08/311,638
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Inventor:
David B. Smith
Patented Case
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Granted: Sep 24, 1996
Filed: Sep 23, 1994
Inventor
David B. Smith
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.