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Priority to JP1974037677UpriorityCriticalpatent/JPS547313Y2/ja
Priority to US497340Aprioritypatent/US3913059A/en
Priority to CA207,290Aprioritypatent/CA1019813A/en
Publication of JPS50126935UpublicationCriticalpatent/JPS50126935U/ja
Application grantedgrantedCritical
Publication of JPS547313Y2publicationCriticalpatent/JPS547313Y2/ja