Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Niskanen Erkki OyfiledCriticalNiskanen Erkki Oy
Priority to FI843465ApriorityCriticalpatent/FI72790C/fi
Publication of FI843465A0publicationCriticalpatent/FI843465A0/fi
Publication of FI843465ApublicationCriticalpatent/FI843465A/fi
Application grantedgrantedCritical
Publication of FI72790BpublicationCriticalpatent/FI72790B/fi
Publication of FI72790CpublicationCriticalpatent/FI72790C/fi