Document with tamper and counterfeit resistant relief markings
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United States of America Patent
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Jun 30, 1998
Grant Date -
N/A
app pub date -
Dec 7, 1995
filing date -
Dec 7, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tamper and counterfeit resistant security maker comprises relief impressions having a plurality of distinct and contrasting relief structures, wherein a first relief structure comprises a background pattern and at least a second relief structure comprises a latent image pattern containing informational content. The relief patterns comprise different optical properties which facilitates the viewing of a latent image pattern at certain angles.
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Cited Art Landscape
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