RF inventory system

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S568100, C340S870030, C340S870030, C340S870030

Reexamination Certificate

active

06927692

ABSTRACT:
A system and method for calculating a quantity of items wherein each item has a tag attached to it. A low intensity RF signal is radiated, causing each tag to generate a reflected signal. The frequency response of the reflected signals is then measured, and the quantity of tagged items is calculated based on the frequency response of the reflected signals.

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