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Application filed by Arvi Juhani WianderfiledCriticalArvi Juhani Wiander
Priority to FI752652ApriorityCriticalpatent/FI60973C/fi
Publication of FI752652ApublicationCriticalpatent/FI752652A/fi
Publication of FI60973BpublicationCriticalpatent/FI60973B/fi
Application grantedgrantedCritical
Publication of FI60973CpublicationCriticalpatent/FI60973C/fi