FLOOD DEFENSE APPARATUS, SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
Apr 29, 2010
filing date -
Apr 29, 2010
priority date (Note) -
Abandoned
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Abstract
received in the chamber portion to be selectively moveable between a first position within the channel and a second position where the barrier member at least partially extends from the channel. The level of liquid in the drainage portion follows the level of liquid in the chamber portion to allow, in use, varying levels of liquid in the channel to move the barrier member reversibly between the first position and the second position.
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