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Application filed by Pentti Ensio HoikkalafiledCriticalPentti Ensio Hoikkala
Priority to FI883367ApriorityCriticalpatent/FI883367A/fi
Publication of FI883367A0publicationCriticalpatent/FI883367A0/fi
Publication of FI883367ApublicationCriticalpatent/FI883367A/fi