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Priority to JP1987039554UpriorityCriticalpatent/JPH0648148Y2/ja
Priority to US07/169,330prioritypatent/US4855609A/en
Priority to CA000561816Aprioritypatent/CA1325751C/en
Priority to GB8806447Aprioritypatent/GB2202280B/en
Publication of JPS63147566UpublicationCriticalpatent/JPS63147566U/ja
Application grantedgrantedCritical
Publication of JPH0648148Y2publicationCriticalpatent/JPH0648148Y2/ja