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 FI751772Aexternal-prioritypatent/FI51994C/fi
Application filed by Valmet OyfiledCriticalValmet Oy
Priority to FI761696ApriorityCriticalpatent/FI52767C/fi
Priority to DE2655893Aprioritypatent/DE2655893B2/de
Priority to FR7637309Aprioritypatent/FR2354414A1/fr
Priority to US05/749,522prioritypatent/US4089094A/en
Publication of FI761696A7publicationCriticalpatent/FI761696A7/fi
Application grantedgrantedCritical
Publication of FI52767BpublicationCriticalpatent/FI52767B/fi
Publication of FI52767CpublicationCriticalpatent/FI52767C/fi