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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.)
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Priority claimed from FR14922Aexternal-prioritypatent/FR1458156A/fr
Application filedfiledCritical
Priority to FR39864ApriorityCriticalpatent/FR89483E/fr
Priority claimed from FR89483Aexternal-prioritypatent/FR1506993A/fr
Application grantedgrantedCritical
Publication of FR89483EpublicationCriticalpatent/FR89483E/fr
