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Application filed by 下山 良治filedCritical下山 良治
Priority to JP1980068718UpriorityCriticalpatent/JPS585493Y2/ja
Publication of JPS56170968UpublicationCriticalpatent/JPS56170968U/ja
Application grantedgrantedCritical
Publication of JPS585493Y2publicationCriticalpatent/JPS585493Y2/ja