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Priority to JP1974038052UpriorityCriticalpatent/JPS534344Y2/ja
Priority to GB2151374Aprioritypatent/GB1467068A/en
Priority to US05/470,334prioritypatent/US3987131A/en
Publication of JPS50126822UpublicationCriticalpatent/JPS50126822U/ja
Application grantedgrantedCritical
Publication of JPS534344Y2publicationCriticalpatent/JPS534344Y2/ja