Electronic label interrogation through incidental electromagnetic radiation
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United States of America Patent
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May 22, 2007
Grant Date -
Oct 14, 2004
app pub date -
Apr 27, 2004
filing date -
Oct 29, 2001
priority date (Note) -
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Abstract
A system for electromagnetically interrogating electronically coded labels is provided. The system includes at least one electromagnetically interrogatable electronic coded label, an interrogator containing a generator of electromagnetic interrogation signals and a receiver of electromagnetic reply signals from the label. The system is adapted to make use of electromagnetic signals, other than those generated by the interrogator, which may reach the label.
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