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Application filed by 東京サイレン株式会社filedCritical東京サイレン株式会社
Priority to JP5657980UpriorityCriticalpatent/JPS5942131Y2/ja
Publication of JPS56159178UpublicationCriticalpatent/JPS56159178U/ja
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Publication of JPS5942131Y2publicationCriticalpatent/JPS5942131Y2/ja