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Priority to JP1976017722UpriorityCriticalpatent/JPS6226739Y2/ja
Priority to DE2706462Aprioritypatent/DE2706462C3/de
Publication of JPS52109837UpublicationCriticalpatent/JPS52109837U/ja
Application grantedgrantedCritical
Publication of JPS6226739Y2publicationCriticalpatent/JPS6226739Y2/ja