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Priority claimed from FR960962Aexternal-prioritypatent/FR1422835A/fr
Priority claimed from AT538065Aexternal-prioritypatent/AT285313B/de
Priority claimed from FR20695Aexternal-prioritypatent/FR90003E/fr
Application filed by SebregfiledCriticalSebreg
Application grantedgrantedCritical
Publication of AT297470BpublicationCriticalpatent/AT297470B/de