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Priority to JP9439876UpriorityCriticalpatent/JPS5514764Y2/ja
Priority to GB24833/77Aprioritypatent/GB1532746A/en
Priority to US05/806,883prioritypatent/US4137879A/en
Priority to FR7718745Aprioritypatent/FR2355172A1/fr
Publication of JPS5312920UpublicationCriticalpatent/JPS5312920U/ja
Application grantedgrantedCritical
Publication of JPS5514764Y2publicationCriticalpatent/JPS5514764Y2/ja