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Application filed by Antti Kalervo HeilalafiledCriticalAntti Kalervo Heilala
Priority to FI45065ApriorityCriticalpatent/FI40022C/fi
Publication of FI40022BpublicationCriticalpatent/FI40022B/fi
Application grantedgrantedCritical
Publication of FI40022CpublicationCriticalpatent/FI40022C/fi