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Priority to JP1987071328UpriorityCriticalpatent/JPH0417513Y2/ja
Publication of JPS63180263UpublicationCriticalpatent/JPS63180263U/ja
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Procédé et système pour atténuer l'effet d'interférence affectant les systèmes intégrés de détection de métaux/surveillance électronique d'articles
System and method for detecting the unauthorised passage of articles through an interrogation zone and an apparatus for and method of producing an interrogation signal in said zone