Indicator System For Goods And Services
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United States of America Patent
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app pub date -
Apr 19, 2006
filing date -
Jun 5, 2001
priority date (Note) -
Abandoned
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Abstract
An indicator system with a blocked state and an unblocked state is disclosed. The indicator system may be used in conjunction with packaged products, packaging materials, medical products, films, biological assays and diagnostics, identification badges, and/or security passes. The indicator system responds to a triggering stimulus once unblocked. The respond is observable through a color change that may include a change form colorless to colored, colored to colorless, and/or colored to colored. The indicator system in its blocked state is substantially unreactive with the triggering stimulus.
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