Breathing mask
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 18, 1997
Issued Date -
N/A
app pub date -
Nov 13, 1995
filing date -
Nov 29, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A breathing mask to be placed on a user's head includes a pressure gas container in the form of one or more closed communicating tubes which form a closed or a open ring adapted to encircle the user's face in front of the user's ears, a sealing member preferably being connected in serial arrangement with a pressure reduction valve and an airtight chamber of the mask.
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Family
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