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 BE761628Aexternal-prioritypatent/BE761628A/en
Priority claimed from BE763730Aexternal-prioritypatent/BE763730R/en
Application filed by Omnium Chimique SafiledCriticalOmnium Chimique Sa
Publication of DK143562BpublicationCriticalpatent/DK143562B/en
Application grantedgrantedCritical
Publication of DK143562CpublicationCriticalpatent/DK143562C/en