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Priority to JP1987047163UpriorityCriticalpatent/JPH0530494Y2/ja
Priority to US07/174,889prioritypatent/US4867220A/en
Priority to GB8807526Aprioritypatent/GB2202806B/en
Priority to DE3810888Aprioritypatent/DE3810888A1/de
Publication of JPS63155723UpublicationCriticalpatent/JPS63155723U/ja
Application grantedgrantedCritical
Publication of JPH0530494Y2publicationCriticalpatent/JPH0530494Y2/ja