Granted Patent
Utility
US 6,620,100 · App. 09/982,321
Hearing evaluation device with noise-weighting capabilities
Inventors:
Matthijs P. Smits, Aaron Thornton
Patented Case
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Granted: Sep 16, 2003
Filed: Oct 17, 2001
Inventors
Matthijs P. Smits
Aaron Thornton
Assignee (at issue)
Natus Medical Incorporated
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.