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 Pekka Pellervo Miettinen, Matti Eino MetsaemaafiledCriticalPekka Pellervo Miettinen
Priority to FI935266ApriorityCriticalpatent/FI935266A0/en
Publication of FI935266A0publicationCriticalpatent/FI935266A0/en