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Priority claimed from FR7417232Aexternal-prioritypatent/FR2278485A1/fr
Application filed by Saint GobainfiledCriticalSaint Gobain
Priority to AT633380ApriorityCriticalpatent/AT365979B/de
Publication of ATA633380ApublicationCriticalpatent/ATA633380A/de
Application grantedgrantedCritical
Publication of AT365979BpublicationCriticalpatent/AT365979B/de