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 FI853562Aexternal-prioritypatent/FI79469C/en
Application filed by DegussafiledCriticalDegussa
Publication of FI885121A0publicationCriticalpatent/FI885121A0/en
Publication of FI885121ApublicationCriticalpatent/FI885121A/en
Publication of FI80212BpublicationCriticalpatent/FI80212B/en
Application grantedgrantedCritical
Publication of FI80212CpublicationCriticalpatent/FI80212C/en