MULTI-LAYERED ENGRAVING
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United States of America Patent
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Issued Date -
Aug 26, 2021
app pub date -
Feb 23, 2020
filing date -
Feb 23, 2020
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Abstract
A method for producing patterns, images and features in multilayered materials through a subtractive process using electromagnetic radiation, physical or chemical means. Engraved or etched material is made of multi-layered structures that interact to produce an electromagnetic effect or response.
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