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 Valmet OyfiledCriticalValmet Oy
Priority to FI3720/74ApriorityCriticalpatent/FI372074A/fi
Priority to US05/568,140prioritypatent/US4016032A/en
Priority to SE7514243Aprioritypatent/SE416973B/xx
Priority to FI761114Aprioritypatent/FI66933C/fi
Publication of FI372074ApublicationCriticalpatent/FI372074A/fi