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Priority to JP2792781UpriorityCriticalpatent/JPH0218513Y2/ja
Priority to US06/350,174prioritypatent/US4420660A/en
Priority to DE8282101403Tprioritypatent/DE3268211D1/de
Priority to EP82101403Aprioritypatent/EP0061006B2/en
Publication of JPS57140056UpublicationCriticalpatent/JPS57140056U/ja
Application grantedgrantedCritical
Publication of JPH0218513Y2publicationCriticalpatent/JPH0218513Y2/ja