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Application filed by Oiva Kalervo SuutarinenfiledCriticalOiva Kalervo Suutarinen
Priority to FI751227ApriorityCriticalpatent/FI55938C/fi
Publication of FI751227ApublicationCriticalpatent/FI751227A/fi
Application grantedgrantedCritical
Publication of FI55938BpublicationCriticalpatent/FI55938B/fi
Publication of FI55938CpublicationCriticalpatent/FI55938C/fi