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Priority to JP49008898ApriorityCriticalpatent/JPS50104646A/ja
Priority to US05/534,886prioritypatent/US3988748A/en
Priority to DE2461381Aprioritypatent/DE2461381C3/de
Priority to FR7442919Aprioritypatent/FR2256432B1/fr
Publication of JPS50104646ApublicationCriticalpatent/JPS50104646A/ja