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Application filed by Antti Pitkaenen, Reijo TuovinenfiledCriticalAntti Pitkaenen
Priority to FI974331ApriorityCriticalpatent/FI103355B/fi
Publication of FI974331A0publicationCriticalpatent/FI974331A0/fi
Application grantedgrantedCritical
Publication of FI103355B1publicationCriticalpatent/FI103355B1/fi
Publication of FI103355BpublicationCriticalpatent/FI103355B/fi