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Priority claimed from GB868609172Aexternal-prioritypatent/GB8609172D0/en
Priority claimed from GB868609174Aexternal-prioritypatent/GB8609174D0/en
Application filed by Glidevale Building ProdfiledCriticalGlidevale Building Prod
Priority claimed from EP19870303310external-prioritypatent/EP0243079B1/en
Application grantedgrantedCritical
Publication of ATE64640T1publicationCriticalpatent/ATE64640T1/en