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 Unto Kalervo PuolakanahofiledCriticalUnto Kalervo Puolakanaho
Priority to FI920442UpriorityCriticalpatent/FI436U1/fi
Publication of FIU920442U0publicationCriticalpatent/FIU920442U0/fi
Application grantedgrantedCritical
Publication of FI436U1publicationCriticalpatent/FI436U1/fi