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Priority to JP10295272UpriorityCriticalpatent/JPS5650837Y2/ja
Priority to GB4180973Aprioritypatent/GB1436403A/en
Priority to CA180,321Aprioritypatent/CA1037390A/en
Publication of JPS4961347UpublicationCriticalpatent/JPS4961347U/ja
Application grantedgrantedCritical
Publication of JPS5650837Y2publicationCriticalpatent/JPS5650837Y2/ja