Breathing mask
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 15, 2000
Issued Date -
N/A
app pub date -
Oct 6, 1997
filing date -
Mar 26, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides different size breathing masks in which single size filtration shells are attached to a single size face contacting member at the same periphery. A single size face contacting member has one, or more than one size, inner breathing opening with a narrower cut profile in the nose area than in the mouth and chin area. Such different size breathing masks would fit and provide an effective seal for more than one size of wearer.
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Family
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Cited Art Landscape
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