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WATER-IMMERSION INDICATOR INDICIA AND ARTICLES BEARING SUCH INDICIA
WATER-IMMERSION INDICATOR INDICIA AND ARTICLES BEARING SUCH INDICIA
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机译:浸水指示标记和带有这种标记的文章
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摘要
There are described articles bearing indicia applied with an ink composition which comprises two or more color-changing or color-forming components which combine, or become diluted, upon exposure to water for a sufficient period of time to cause a change in the appearance of the indicia. Also described are printing ink compositions for forming such indicia and methods for forming such articles.
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