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United States of America Patent
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Nov 7, 2006
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N/A
app pub date -
Apr 2, 2004
filing date -
Apr 7, 2003
priority date (Note) -
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Abstract
Coded data for disposal on or in an interface surface associated with a product item, the coded data being indicative of an identity of the product item, the coded data being arranged in accordance with at least one layout having n-fold rotational symmetry about a center of rotation, where n is at least two, the layout including n identical sub-layouts rotated 1/n revolutions apart about the center of rotation, at least one sub-layout including rotation-indicating data that distinguishes that sub-layout from each other sub-layout.
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