Freeze indicator
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United States of America Patent
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Aug 9, 2016
Grant Date -
Oct 23, 2014
app pub date -
Apr 23, 2014
filing date -
Apr 23, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a freeze indicator, and more particularly, to a freeze indicator capable of easily confirming whether products are exposed to a freezing temperature or less using a development medium member containing a development material having hydrophobic property and moisture, and using diffusion characteristics of the development material into a development medium only when the moisture is frozen at a freezing temperature or less of the moisture.
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