Hysteresis assessment for metal immunity

Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation

Reexamination Certificate

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C606S130000, C324S207120

Reexamination Certificate

active

07974680

ABSTRACT:
Assessment apparatus is provided, including a set of one or more radiators, which is adapted to generate an energy field at at least one fundamental frequency. A receiving sensor is adapted to generate a first signal responsive to the energy field when an interfering article is at a first location relative to the receiving sensor, and is adapted to generate a second signal responsive to the energy field when the interfering article is at a second location relative to the receiving sensor. A control unit is adapted to (a) receive and analyze the first and second signals, in order to compute a fingerprint signal characteristic of the interfering article, and (b) store, in a database, data indicative of the fingerprint signal, in association with an identity of the interfering article.

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