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Application filed by Keijo Reino Kalevi TakalafiledCriticalKeijo Reino Kalevi Takala
Priority to FI733582ApriorityCriticalpatent/FI52890C/fi
Publication of FI358273A7publicationCriticalpatent/FI358273A7/fi
Publication of FI52890BpublicationCriticalpatent/FI52890B/fi
Application grantedgrantedCritical
Publication of FI52890CpublicationCriticalpatent/FI52890C/fi