Granted Patent
Utility
US 6,185,740 · App. 09/603,861
Disposable patient facial mask
Inventors:
Peter John Zegarelli, Mitchell V. Steinberg
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Jun 26, 2000
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.