Granted Patent
Utility
US 6,523,179 · App. 09/929,541
Disposable patient face mask
Inventors:
Peter John Zegarelli, Mitchell V. Steinberg
Patented Case
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Granted: Feb 25, 2003
Filed: Aug 13, 2001
Inventors
Peter John Zegarelli
Mitchell V. Steinberg
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.