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 Kemi OyfiledCriticalKemi Oy
Priority to FI1593/74ApriorityCriticalpatent/FI159374A7/fi
Publication of FI159374A7publicationCriticalpatent/FI159374A7/fi