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Application filed by Elis HeinonenfiledCriticalElis Heinonen
Priority to FI0576/69ApriorityCriticalpatent/FI41947B/fi
Application grantedgrantedCritical
Publication of FI41947BpublicationCriticalpatent/FI41947B/fi
Priority to SE01043/70Aprioritypatent/SE354680B/xx