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
Priority claimed from FI864393Aexternal-prioritypatent/FI864393A0/en
Priority claimed from FI872060Aexternal-prioritypatent/FI872060A/en
Application filed by Veikko Yrjoe Johannes Impola, Markku Tapani KorhonenfiledCriticalVeikko Yrjoe Johannes Impola
Priority to FI891683ApriorityCriticalpatent/FI891683A0/en
Publication of FI891683ApublicationCriticalpatent/FI891683A/en
Publication of FI891683A0publicationCriticalpatent/FI891683A0/en