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Priority claimed from GB3344561Aexternal-prioritypatent/GB949098A/en
Application filed by Hinrich Reelf KortlangfiledCriticalHinrich Reelf Kortlang
Priority claimed from FR877225Aexternal-prioritypatent/FR1304578A/en
Publication of BE608966ApublicationCriticalpatent/BE608966A/en