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Application filed by Paavo LahtinenfiledCriticalPaavo Lahtinen
Priority to FI860695ApriorityCriticalpatent/FI74330C/en
Publication of FI860695A0publicationCriticalpatent/FI860695A0/en
Application grantedgrantedCritical
Publication of FI74330BpublicationCriticalpatent/FI74330B/en
Publication of FI74330CpublicationCriticalpatent/FI74330C/en