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Priority claimed from NL707008908Aexternal-prioritypatent/NL143502B/xx
Priority claimed from GB2050172Aexternal-prioritypatent/GB1435509A/en
Application filed by Wavin Bv, Dunlop LtdfiledCriticalWavin Bv
Publication of TR17409ApublicationCriticalpatent/TR17409A/tr