Dual control valve for positive pressure artificial respiration apparatus
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United States of America Patent
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-
Dec 16, 1980
Grant Date -
N/A
app pub date -
Feb 28, 1979
filing date -
Feb 28, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to improvements in the portable, positive-pressure artificial respiration apparatus and, more particularly, to improvements in the air passageway systems of such apparatus by using a dual control valve.
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