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Application filed by Pertti Juha NieminenfiledCriticalPertti Juha Nieminen
Priority to FI751278ApriorityCriticalpatent/FI61745C/fi
Publication of FI751278A7publicationCriticalpatent/FI751278A7/fi
Publication of FI61745BpublicationCriticalpatent/FI61745B/fi
Application grantedgrantedCritical
Publication of FI61745CpublicationCriticalpatent/FI61745C/fi