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 Maansaehkoe OyfiledCriticalMaansaehkoe Oy
Priority to FI881697ApriorityCriticalpatent/FI85197C/fi
Publication of FI881697A0publicationCriticalpatent/FI881697A0/fi
Publication of FI881697ApublicationCriticalpatent/FI881697A/fi
Publication of FI85197BpublicationCriticalpatent/FI85197B/fi
Application grantedgrantedCritical
Publication of FI85197CpublicationCriticalpatent/FI85197C/fi