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Priority claimed from US06/691,442external-prioritypatent/US4542271A/en
Application filed by Rubbermaid Inc, Polymer Eng IncfiledCriticalRubbermaid Inc
Publication of DK211385D0publicationCriticalpatent/DK211385D0/en
Publication of DK211385ApublicationCriticalpatent/DK211385A/en