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Publication date
Priority claimed from FI891547Aexternal-prioritypatent/FI891547A/en
Application filed by Veikko Yrjoe Johannes ImpolafiledCriticalVeikko Yrjoe Johannes Impola
Priority to FI892317ApriorityCriticalpatent/FI892317A/en
Publication of FI892317A0publicationCriticalpatent/FI892317A0/en
Publication of FI892317ApublicationCriticalpatent/FI892317A/en