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Application filed by Tauno AaltonenfiledCriticalTauno Aaltonen
Priority to FI912835ApriorityCriticalpatent/FI88683C/fi
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Publication of FI912835ApublicationCriticalpatent/FI912835A/fi
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Publication of FI88683BpublicationCriticalpatent/FI88683B/fi
Publication of FI88683CpublicationCriticalpatent/FI88683C/fi