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Priority to JP9010386UpriorityCriticalpatent/JPH0322208Y2/ja
Priority to US07/055,715prioritypatent/US4877967A/en
Priority to IT8748010Aprioritypatent/IT1206012B/it
Priority to DE19873718616prioritypatent/DE3718616A1/de
Publication of JPS6313966UpublicationCriticalpatent/JPS6313966U/ja
Application grantedgrantedCritical
Publication of JPH0322208Y2publicationCriticalpatent/JPH0322208Y2/ja