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Application filedfiledCritical
Priority to JP19910486UpriorityCriticalpatent/JPH0424313Y2/ja
Priority to US07/139,842prioritypatent/US4892136A/en
Priority to CA000555567Aprioritypatent/CA1294605C/en
Priority to DE8787119405Tprioritypatent/DE3775367D1/de
Priority to EP87119405Aprioritypatent/EP0273462B1/en
Publication of JPS63109866UpublicationCriticalpatent/JPS63109866U/ja
Application grantedgrantedCritical
Publication of JPH0424313Y2publicationCriticalpatent/JPH0424313Y2/ja
