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Publication date
Priority claimed from NL717101739Aexternal-prioritypatent/NL144886B/xx
Priority claimed from AT523671Aexternal-prioritypatent/AT313166B/de
Application filed by Wavin BvfiledCriticalWavin Bv
Priority to AT631073ApriorityCriticalpatent/AT331707B/de
Publication of ATA631073ApublicationCriticalpatent/ATA631073A/de
Application grantedgrantedCritical
Publication of AT331707BpublicationCriticalpatent/AT331707B/de