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Application filed by Jozef Ing Jakub, Jozef Janicek, Frantisek Ing LavcakfiledCriticalJozef Ing Jakub
Priority to CS843622ApriorityCriticalpatent/CS239391B1/en
Publication of CS362284A1publicationCriticalpatent/CS362284A1/en
Publication of CS239391B1publicationCriticalpatent/CS239391B1/en