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Priority claimed from IT24392/74Aexternal-prioritypatent/IT1015377B/it
Priority claimed from IT2019175Aexternal-prioritypatent/IT1046381B/it
Application filed by Snam ProgettifiledCriticalSnam Progetti
Publication of ATA483275ApublicationCriticalpatent/ATA483275A/de
Application grantedgrantedCritical
Publication of AT340900BpublicationCriticalpatent/AT340900B/de