Granted Patent
Utility
US 4,950,445 · App. 07/206,597
Method of vacuum forming disposable faceshield
Inventors:
Arthur J. Salce, Richard T. Metcalfe
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Jun 14, 1988
Inventors
Arthur J. Salce
Richard T. Metcalfe
Assignee (at issue)
Cabot Safety Corporation
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.