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Priority to JP1987027650UpriorityCriticalpatent/JPH043737Y2/ja
Priority to CA000559222Aprioritypatent/CA1303147C/en
Priority to US07/160,385prioritypatent/US4845333A/en
Priority to GB8808930Aprioritypatent/GB2217247B/en
Publication of JPS63138978UpublicationCriticalpatent/JPS63138978U/ja
Application grantedgrantedCritical
Publication of JPH043737Y2publicationCriticalpatent/JPH043737Y2/ja
