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 FR7437295Aexternal-prioritypatent/FR2290907A2/en
Priority claimed from CS75418Aexternal-prioritypatent/CS187458B2/en
Application filed by Rhone Poulenc IndfiledCriticalRhone Poulenc Ind
Priority to CS773617ApriorityCriticalpatent/CS187500B2/en
Publication of CS187500B2publicationCriticalpatent/CS187500B2/en