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 FR851259Aexternal-prioritypatent/FR1287431A/en
Application filed by Pennsalt Chemicals CorpfiledCriticalPennsalt Chemicals Corp
Application grantedgrantedCritical
Publication of BE614902QpublicationCriticalpatent/BE614902Q/en