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Priority to JP13350280UpriorityCriticalpatent/JPS6136434Y2/ja
Priority to US06/301,121prioritypatent/US4434999A/en
Publication of JPS5755642UpublicationCriticalpatent/JPS5755642U/ja
Application grantedgrantedCritical
Publication of JPS6136434Y2publicationCriticalpatent/JPS6136434Y2/ja