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Application filed by Veijo Petri August HaapanenfiledCriticalVeijo Petri August Haapanen
Priority to FI891266ApriorityCriticalpatent/FI82323C/en
Publication of FI891266A0publicationCriticalpatent/FI891266A0/en
Application grantedgrantedCritical
Publication of FI82323BpublicationCriticalpatent/FI82323B/en
Publication of FI82323CpublicationCriticalpatent/FI82323C/en