Composite triangular-pyramidal cube-corner retroreflective sheeting and retroreflective articles
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United States of America Patent
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May 31, 2011
Grant Date -
May 14, 2009
app pub date -
Nov 2, 2005
filing date -
Nov 2, 2004
priority date (Note) -
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Abstract
Adoption of composite cube-corner retroreflective elements in which groups of each at least two sub-retroreflective elements which are each defined by three lateral faces mutually crossing at approximately right angles, as being configured by three-directional V-shaped parallel groove groups having substantially symmetrical sections and intersecting with each other, and which are arrayed in the closest-packed state, projecting on one side of their common sub-plane (SH-SH), each of said groups of sub-reflective elements being disposed on one main retroreflective element which is defined by three lateral faces mutually crossing at approximately right angles, as being configured by three-directional V-shaped parallel groove groups having substantially symmetrical sections and intersecting with each other, and which is disposed on the main plane (S-S).
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