WATER PURIFYING FILTER
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United States of America Patent
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Issued Date -
Jan 18, 2018
app pub date -
Aug 31, 2017
filing date -
Jul 13, 2016
priority date (Note) -
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Abstract
A water purifying filter has a cylindrical inner housing to receive a filter therein, and an outer housing to receive the inner housing. The inner housing and the outer housing are spaced apart from each other to form an insulation space configured to suppress heat transfer and to reduce the filter freezing inside the inner housing.
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