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Application filed by Ari Jaakko Juhani Viero, Pentti Juhani TarpiofiledCriticalAri Jaakko Juhani Viero
Priority to FI870689ApriorityCriticalpatent/FI77077C/en
Publication of FI870689A0publicationCriticalpatent/FI870689A0/en
Application grantedgrantedCritical
Publication of FI77077BpublicationCriticalpatent/FI77077B/en
Publication of FI77077CpublicationCriticalpatent/FI77077C/en