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Application filed by Pentti Lappalainen, Veikko Ensio HaemeenahofiledCriticalPentti Lappalainen
Priority to FI35474ApriorityCriticalpatent/FI49886C/fi
Application grantedgrantedCritical
Publication of FI49886BpublicationCriticalpatent/FI49886B/fi
Publication of FI49886CpublicationCriticalpatent/FI49886C/fi