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Application filed by 帝国通信工業株式会社filedCritical帝国通信工業株式会社
Priority to JP10123381UpriorityCriticalpatent/JPS588902U/ja
Publication of JPS588902UpublicationCriticalpatent/JPS588902U/ja
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Publication of JPS6130247Y2publicationCriticalpatent/JPS6130247Y2/ja