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Priority to JP1988024974UpriorityCriticalpatent/JPH0624622Y2/ja
Priority to CA000588878Aprioritypatent/CA1319668C/en
Publication of JPH01132880UpublicationCriticalpatent/JPH01132880U/ja
Application grantedgrantedCritical
Publication of JPH0624622Y2publicationCriticalpatent/JPH0624622Y2/ja
