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Priority to JP1979078109UpriorityCriticalpatent/JPS6141011Y2/ja
Priority to US06/109,404prioritypatent/US4355566A/en
Priority to GB8018235Aprioritypatent/GB2056565B/en
Priority to IT8022642Aprioritypatent/IT1131525B/it
Publication of JPS55177571UpublicationCriticalpatent/JPS55177571U/ja
Application grantedgrantedCritical
Publication of JPS6141011Y2publicationCriticalpatent/JPS6141011Y2/ja