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Application filed by Mauno Kalevi KoivusalofiledCriticalMauno Kalevi Koivusalo
Priority to FI751285ApriorityCriticalpatent/FI52614C/fi
Publication of FI751285A7publicationCriticalpatent/FI751285A7/fi
Publication of FI52614BpublicationCriticalpatent/FI52614B/fi
Application grantedgrantedCritical
Publication of FI52614CpublicationCriticalpatent/FI52614C/fi