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Priority to JP1978114276UpriorityCriticalpatent/JPS6132398Y2/ja
Priority to DE2910001Aprioritypatent/DE2910001C2/de
Priority to US06/020,481prioritypatent/US4259551A/en
Priority to GB7908933Aprioritypatent/GB2016811B/en
Priority to CH247779Aprioritypatent/CH637802B/de
Publication of JPS5530873UpublicationCriticalpatent/JPS5530873U/ja
Application grantedgrantedCritical
Publication of JPS6132398Y2publicationCriticalpatent/JPS6132398Y2/ja