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Application filed by Teuvo ArminenfiledCriticalTeuvo Arminen
Priority to FI840421ApriorityCriticalpatent/FI72494C/fi
Publication of FI840421A0publicationCriticalpatent/FI840421A0/fi
Publication of FI840421ApublicationCriticalpatent/FI840421A/fi
Publication of FI72494BpublicationCriticalpatent/FI72494B/fi
Application grantedgrantedCritical
Publication of FI72494CpublicationCriticalpatent/FI72494C/fi