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Priority claimed from US06/564,721external-prioritypatent/US4561625A/en
Application filed by Libbey Owens Ford CofiledCriticalLibbey Owens Ford Co
Publication of IT8449082A0publicationCriticalpatent/IT8449082A0/it
Publication of IT8449082A1publicationCriticalpatent/IT8449082A1/it
Application grantedgrantedCritical
Publication of IT1178177BpublicationCriticalpatent/IT1178177B/it