Weather seal system for double hung windows
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United States of America Patent
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Jan 31, 2017
Grant Date -
Oct 8, 2015
app pub date -
Jun 22, 2015
filing date -
Aug 10, 2012
priority date (Note) -
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Abstract
A window includes a weather seal system that employs two seals. The first seal is located towards an exterior surface of the window and forms an air-permeable water barrier between an active sash and a sill. The second seal is located towards an interior surface of the window and forms a substantially air-impermeable and water-impermeable barrier between the active sash and the sill.
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