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TOKYO MAEKAWA SCIENT APP Manufacturing
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TOKYO MAEKAWA SCIENT APP Manufacturing
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Application filed by TOKYO MAEKAWA SCIENT APP ManufacturingfiledCriticalTOKYO MAEKAWA SCIENT APP Manufacturing
Priority to JP57022395ApriorityCriticalpatent/JPS58140778A/ja
Publication of JPS58140778ApublicationCriticalpatent/JPS58140778A/ja
Publication of JPH0230507B2publicationCriticalpatent/JPH0230507B2/ja
Apparatus having floating magnet unit with light reflecting mirror for detecting and indicating to an observer the presence upon a person entering a public place of ferromagnetic material that may be put to harmful use