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Application filed by Poshekhnov Vladimir D, Vladimir Ivanovich Dvoretsky, Boris Alexeevich SchetchikovfiledCriticalPoshekhnov Vladimir D
Priority to FI793852ApriorityCriticalpatent/FI68542C/fi
Publication of FI793852ApublicationCriticalpatent/FI793852A/fi
Application grantedgrantedCritical
Publication of FI68542BpublicationCriticalpatent/FI68542B/fi
Publication of FI68542CpublicationCriticalpatent/FI68542C/fi