04231363 is referenced by 74 patents and cites 6 patents.

A device for delivering gas to a patient comprises a unitary mask member for overlying the patient's nose and mouth and having an upper peripheral surface for lying in sealing engagement against the nose and cheeks, and a lower peripheral surface contiguous therewith disposed outwardly from the face, and a gas delivery member extending along the mask interior having orifices for delivering gas.

Title
Gas delivery face shield
Application Number
737851
Publication Number
4231363
Application Date
January 8, 1979
Publication Date
November 4, 1980
Inventor
Jerry L Grimes
Star Rte., Box 517, Lytle Creek, 92358
CA, US
Agent
Seiler & Quirk
IPC
A61M 16/00
View Original Source