Humidity-retaining mask
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United States of America Patent
Stats
-
Apr 16, 1991
Grant Date -
N/A
app pub date -
Jun 27, 1989
filing date -
Jul 14, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A humidity-retaining mask includes a foldable mask body made of humidity-absorbing sheet material which is folded into a honeycomb structure when the mask is used. The mask body has a recessed portion on the upper side thereof to receive a user's nostril, and ear traps attached to the mask body.
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