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 FR8508777Aexternal-prioritypatent/FR2583149B1/fr
Application filed by Air LiquidefiledCriticalAir Liquide
Application grantedgrantedCritical
Publication of ATE51290T1publicationCriticalpatent/ATE51290T1/de