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Priority to JP1972090650UpriorityCriticalpatent/JPS5430505Y2/ja
Priority to US374097Aprioritypatent/US3903862A/en
Priority to DE19732333010prioritypatent/DE2333010C3/de
Publication of JPS4946133UpublicationCriticalpatent/JPS4946133U/ja
Application grantedgrantedCritical
Publication of JPS5430505Y2publicationCriticalpatent/JPS5430505Y2/ja