Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR7822216Aexternal-prioritypatent/FR2432199A1/fr
Priority claimed from FR7904259Aexternal-prioritypatent/FR2449954A2/fr
Application filed by P C U K Produits Chimiques Ugine KuhlmannfiledCriticalP C U K Produits Chimiques Ugine Kuhlmann
Priority claimed from EP79400478Aexternal-prioritypatent/EP0008251B1/de
Application grantedgrantedCritical
Publication of ATE710T1publicationCriticalpatent/ATE710T1/de