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Priority claimed from IT2446471Aexternal-prioritypatent/IT986804B/it
Priority claimed from AT418672Aexternal-prioritypatent/AT324785B/de
Application filed by Snam ProgettifiledCriticalSnam Progetti
Priority to AT670974ApriorityCriticalpatent/AT338062B/de
Publication of ATA670974ApublicationCriticalpatent/ATA670974A/de
Application grantedgrantedCritical
Publication of AT338062BpublicationCriticalpatent/AT338062B/de