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Priority to JP3175674UpriorityCriticalpatent/JPS50122864U/ja
Priority to GB3096674Aprioritypatent/GB1468243A/en
Priority to DE19742434675prioritypatent/DE2434675C2/de
Priority to FR7425229Aprioritypatent/FR2238177B1/fr
Publication of JPS50122864UpublicationCriticalpatent/JPS50122864U/ja
