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Priority to JP1987041300UpriorityCriticalpatent/JPH0435015Y2/ja
Priority to CA000559222Aprioritypatent/CA1303147C/en
Priority to US07/160,385prioritypatent/US4845333A/en
Priority to GB8808930Aprioritypatent/GB2217247B/en
Publication of JPS63150771UpublicationCriticalpatent/JPS63150771U/ja
Application grantedgrantedCritical
Publication of JPH0435015Y2publicationCriticalpatent/JPH0435015Y2/ja