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Priority to FR7206745ApriorityCriticalpatent/FR2111986B2/fr
Publication of FR2111986A2publicationCriticalpatent/FR2111986A2/fr
Priority to IT2741372Aprioritypatent/IT963358B/it
Priority to DE19722236986prioritypatent/DE2236986A1/de
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Publication of FR2111986B2publicationCriticalpatent/FR2111986B2/fr