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Priority to JP12228090UpriorityCriticalpatent/JP2505744Y2/ja
Publication of JPH0477615UpublicationCriticalpatent/JPH0477615U/ja
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Publication of JP2505744Y2publicationCriticalpatent/JP2505744Y2/ja
Element for use in making a reinforced concrete structure with cavities, filler body for making such an element, and method of making a reinforced concrete structure with cavities