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 Tapio Virokannas, Olavi PekkalafiledCriticalTapio Virokannas
Priority to FI964471ApriorityCriticalpatent/FI105353B/sv
Publication of FI964471A0publicationCriticalpatent/FI964471A0/sv
Publication of FI964471ApublicationCriticalpatent/FI964471A/sv
Application grantedgrantedCritical
Publication of FI105353BpublicationCriticalpatent/FI105353B/sv