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 Kalervo HeikkinenfiledCriticalKalervo Heikkinen
Priority to FI20070858ApriorityCriticalpatent/FI20070858A0/fi
Publication of FI20070858A0publicationCriticalpatent/FI20070858A0/fi