Method of marking objects with code symbols
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United States of America Patent
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-
Feb 17, 1998
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jul 29, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Optical machine readable code symbols for marking objects, preferably recyclable plastic bottles, are so constructed that they possess an axis of symmetry. The code symbols can additionally be rotated by predetermined angles from a basic configuration in order to be able to represent a plurality of information pieces. The symmetric code symbols are easily recognized and evaluated under difficult conditions such as exist, for example, in a bottle filling operation.
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Cited Art Landscape
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