Protective shelter flow control apparatus
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United States of America Patent
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-
Dec 17, 1985
Grant Date -
N/A
app pub date -
Apr 30, 1984
filing date -
Apr 30, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A flow control apparatus for a protective shelter including valve means to allow preselected maximum and minimum amounts of air flow into the shelter depending upon ambient contaminant concentrations.
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