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Application filed by Jindrich Kohout, Borivoj Ing NedbalfiledCriticalJindrich Kohout
Priority to CS834731ApriorityCriticalpatent/CS232395B1/en
Publication of CS473183A1publicationCriticalpatent/CS473183A1/en
Publication of CS232395B1publicationCriticalpatent/CS232395B1/en