Granted Patent
Utility
US 4,296,746 · App. 06/104,948
Disposable full-face surgical mask
Inventors:
Stanley I. Mason, Jr., Michael D. Handler
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Dec 18, 1979
Inventors
Stanley I. Mason, Jr.
Michael D. Handler
Assignee (at issue)
Surgikos, 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.