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Priority claimed from SE8603340Aexternal-prioritypatent/SE459675B/en
Application filed by Crawford Door ProdfiledCriticalCrawford Door Prod
Publication of NO881484D0publicationCriticalpatent/NO881484D0/en
Publication of NO881484LpublicationCriticalpatent/NO881484L/en
Publication of NO166665BpublicationCriticalpatent/NO166665B/en
Publication of NO166665CpublicationCriticalpatent/NO166665C/en