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Priority to JP6491886UpriorityCriticalpatent/JPH037824Y2/ja
Priority to US07/040,797prioritypatent/US4894661A/en
Priority to GB8709625Aprioritypatent/GB2191055B/en
Publication of JPS62176772UpublicationCriticalpatent/JPS62176772U/ja
Priority to GB9001425Aprioritypatent/GB2228158B/en
Application grantedgrantedCritical
Publication of JPH037824Y2publicationCriticalpatent/JPH037824Y2/ja