Method of forming cube corner geometric structures in a substrate using both replicating and machining processes
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United States of America Patent
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Aug 21, 2001
Issued Date -
N/A
app pub date -
Dec 28, 1999
filing date -
Oct 20, 1993
priority date (Note) -
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Abstract
A cube corner article having a structured surface of geometric structures, each geometric structure having a plurality of faces at least some of which are arranged as a cube corner element, is made by providing a first substrate having a plurality of grooves therein, replicating the first substrate in a second substrate, and forming a second plurality of grooves in the second substrate. Geometric structures in the second substrate are formed in part by replication of the first plurality of grooves and in part by the information of the second plurality of grooves.
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