US PATENT SUBCLASS 128 / 200.27
.~ Gas stream directed away from face mask to penetrate contaminated atmosphere

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


128 /   HD   SURGERY

200.24  DF  RESPIRATORY METHOD OR DEVICE {32}
200.27.~ Gas stream directed away from face mask to penetrate contaminated atmosphere

DEFINITION

Classification: 128/200.27

Gas stream directed away from face mask to penetrate contaminated atmosphere:

(under subclass 200.24) Subject matter wherein a gas stream is directed away from a face mask to penetrate a contaminated atmosphere, usually for the purpose of enabling the user of the face mask to see clearly.

(1) Note. See subclass 205.25 for the definition of a face mask.

SEE OR SEARCH CLASS

454, Ventilation,

88+, for protective air currents used in a ventilating system.