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Priority to JP3380074ApriorityCriticalpatent/JPS5712998B2/ja
Priority to US05/530,620prioritypatent/US4028506A/en
Priority to CA215,788Aprioritypatent/CA1010169A/en
Publication of JPS50126303ApublicationCriticalpatent/JPS50126303A/ja
Publication of JPS5712998B2publicationCriticalpatent/JPS5712998B2/ja