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
Application filed by Vigren S Claesson P Freese HfiledCriticalVigren S Claesson P Freese H
Publication of FI25100ApublicationCriticalpatent/FI25100A/fi