Security markings in retroreflective sheeting
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United States of America Patent
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Feb 10, 2015
Grant Date -
Sep 13, 2012
app pub date -
Nov 10, 2010
filing date -
Nov 12, 2009
priority date (Note) -
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Abstract
Retroreflective sheeting includes a first portion of prismatic retroreflective sheeting having a first cube corner structure that creates a first visual feature in the retroreflective sheeting and a second portion of prismatic retroreflective sheeting having a second cube corner structure that differs from the first cube structure and that creates a second visual feature in the sheeting. The second visual feature in the retroreflective sheeting forms a security mark.
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