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Application filed by 日本軽金属 株式会社filedCritical日本軽金属 株式会社
Priority to JP1975172981UpriorityCriticalpatent/JPS5924786Y2/ja
Publication of JPS5283532UpublicationCriticalpatent/JPS5283532U/ja
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Publication of JPS5924786Y2publicationCriticalpatent/JPS5924786Y2/ja