Surgery – Respiratory method or device – Means for keeping viewing member clear
Reexamination Certificate
2007-08-28
2007-08-28
Hayes, Michael J. (Department: 3731)
Surgery
Respiratory method or device
Means for keeping viewing member clear
C128S205250, C128S206170, C128S206230
Reexamination Certificate
active
10143283
ABSTRACT:
The present invention provides an air-purifying respirator facepiece with a removable, one-piece filter element connector. It also has a removable component housing in the lens as well as a nosecup without inhalation valves that prevents fogging of the portion of the lens used for viewing.
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Cavaliere Mark
Kiefer Eileen A.
Schmidke Klaus
Wolf Roger P.
Zeller Paul A.
Bartony, Jr., Esq. Henry E.
Erezo Darwin P.
Hayes Michael J.
Mine Safety Appliances Company
Uber, Esq. James G.
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