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Priority to JP10296472UpriorityCriticalpatent/JPS4961353U/ja
Priority to AU59991/73Aprioritypatent/AU469134B2/en
Priority to GB4180973Aprioritypatent/GB1436403A/en
Priority to CA180,321Aprioritypatent/CA1037390A/en
Publication of JPS4961353UpublicationCriticalpatent/JPS4961353U/ja