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Priority to JP9268474UpriorityCriticalpatent/JPS5326846Y2/ja
Priority to CA232,467Aprioritypatent/CA1050800A/en
Publication of JPS5121225UpublicationCriticalpatent/JPS5121225U/ja
Application grantedgrantedCritical
Publication of JPS5326846Y2publicationCriticalpatent/JPS5326846Y2/ja