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Publication date
Priority claimed from US07/154,669external-prioritypatent/US4875323A/en
Application filed by Manville CorpfiledCriticalManville Corp
Publication of NO893977D0publicationCriticalpatent/NO893977D0/no
Publication of NO893977LpublicationCriticalpatent/NO893977L/no
Publication of NO172792BpublicationCriticalpatent/NO172792B/no
Publication of NO172792CpublicationCriticalpatent/NO172792C/no