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Application filed by 石川 尭filedCritical石川 尭
Priority to JP1978105881UpriorityCriticalpatent/JPS589937Y2/ja
Publication of JPS5522441UpublicationCriticalpatent/JPS5522441U/ja
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Publication of JPS589937Y2publicationCriticalpatent/JPS589937Y2/ja