Sheet materials
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United States of America Patent
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-
Jul 31, 1984
Grant Date -
N/A
app pub date -
Feb 18, 1982
filing date -
Feb 19, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sheet material such as paper is provided during manufacture with an elongate element partially disposed within the thickness of the paper sheet but exposed at spaced locations one one side of the sheet. The paper may be used in making security documents such as banknotes and checks.
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