Self-contained breathing system
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United States of America Patent
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Jan 19, 2010
Grant Date -
Oct 11, 2007
app pub date -
Aug 23, 2004
filing date -
Aug 22, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A breathing apparatus is operable in self-contained and filtered modes of operation. In the self-contained mode of operation, a breathable gas is delivered to a user from a self-contained source of breathing gas. In a second, filtered mode of operation, a suction source draws ambient air through a filter removing contaminants and delivers filtered ambient air to the user. A method of delivering air to a subject is also provided.
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Family
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