Granted Patent
Utility
US 6,723,929 · App. 10/178,692
Acoustic condition sensor employing a plurality of mutually non-orthogonal waves
Inventor:
Joel C. Kent
Patented Case
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Granted: Apr 20, 2004
Filed: Jun 22, 2002
Inventor
Joel C. Kent
Assignee (at issue)
ELO TouchSystems, 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.