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Priority claimed from US07/537,912external-prioritypatent/US5087672A/en
Application filed by Minnesota Mining And Manufacturing CompanyfiledCriticalMinnesota Mining And Manufacturing Company
Publication of HK1008045A1publicationCriticalpatent/HK1008045A1/zh
Publication of HK1008045BpublicationCriticalpatent/HK1008045B/zh