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Publication date
Priority claimed from AT310372Aexternal-prioritypatent/AT346816B/en
Application filed by Snam ProgettifiledCriticalSnam Progetti
Priority to AT942373ApriorityCriticalpatent/AT344852B/en
Publication of ATA942373ApublicationCriticalpatent/ATA942373A/en
Application grantedgrantedCritical
Publication of AT344852BpublicationCriticalpatent/AT344852B/en