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Priority to JP1980112310UpriorityCriticalpatent/JPS6320988Y2/ja
Priority to US06/289,122prioritypatent/US4401384A/en
Publication of JPS5735955UpublicationCriticalpatent/JPS5735955U/ja
Application grantedgrantedCritical
Publication of JPS6320988Y2publicationCriticalpatent/JPS6320988Y2/ja