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Priority claimed from US06/364,000external-prioritypatent/US4424079A/en
Priority claimed from US06/454,127external-prioritypatent/US4451296A/en
Application filed by Gaf CorpfiledCriticalGaf Corp
Publication of DK548583ApublicationCriticalpatent/DK548583A/da
Publication of DK548583D0publicationCriticalpatent/DK548583D0/da