Metallized information carrying discs
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United States of America Patent
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-
Dec 14, 1982
Grant Date -
N/A
app pub date -
Sep 22, 1980
filing date -
Sep 22, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coded information structure capable of being decoded electronically comprising a base and a first layer of an electrically conductive or electromagneted radiation reflective layer adhered to said base wherein said layer having coded information in the form of areas of said layer having been vertically displaced and having ruptures or necking or the side of the depression and an insulating or transparent protective layer over said first layer.
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