BREATHING AIR FILTRATION DEVICES

A nasal air filtration device includes a pair of either planar or concave-convex filters, a support structure incorporating a pair of generally annular bases or sleeves for supporting the filters, and a bridge that couples the bases or sleeves to maintain them in a desired spaced~apart relation and...

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Bibliographic Details
Main Authors WILDER, JOHN D, GELFMAN, DANIEL M
Format Patent
LanguageEnglish
French
Published 15.07.2014
Subjects
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
FIRE-FIGHTING
HUMAN NECESSITIES
LIFE-SAVING
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