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Priority to JP6316580UpriorityCriticalpatent/JPS6323060Y2/ja
Priority to US06/200,949prioritypatent/US4385255A/en
Publication of JPS56163409UpublicationCriticalpatent/JPS56163409U/ja
Application grantedgrantedCritical
Publication of JPS6323060Y2publicationCriticalpatent/JPS6323060Y2/ja