BACK-FLOW PREVENTION WITHIN A HEATER
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United States of America Patent
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Issued Date -
Feb 23, 2012
app pub date -
Aug 17, 2011
filing date -
Aug 18, 2010
priority date (Note) -
Abandoned
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Abstract
Disclosed is a heater including a back-flow preventing device located at or adjacent an outlet of the heater. In some embodiments, the back-flow preventing device has an open position and a closed position. When the back-flow preventing device is in the open position, water is able to flow freely through the heater. When back-flow preventing device is in the closed position, water is prevented from flowing or migrating back into the heater.
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