Granted Patent
Utility
US 6,826,694 · App. 09/422,952
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Inventors:
Partha Dutta, Mahesh Madurai Kumar, Michah Lerner
Patented Case
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Granted: Nov 30, 2004
Filed: Oct 22, 1999
Inventors
Partha Dutta
Mahesh Madurai Kumar
Michah Lerner
Assignee (at issue)
AT&T CORP.
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.