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Priority claimed from FI793722Aexternal-prioritypatent/FI61753C/en
Application filed by Osmo RuotsalainenfiledCriticalOsmo Ruotsalainen
Priority to FI811104ApriorityCriticalpatent/FI64713C/en
Publication of FI811104LpublicationCriticalpatent/FI811104L/en
Publication of FI64713BpublicationCriticalpatent/FI64713B/en
Application grantedgrantedCritical
Publication of FI64713CpublicationCriticalpatent/FI64713C/en