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Application filed by Zbynek Hrncir, Frantisek Ing ZavrelfiledCriticalZbynek Hrncir
Priority to CS819929ApriorityCriticalpatent/CS231743B1/en
Publication of CS992981A1publicationCriticalpatent/CS992981A1/en
Publication of CS231743B1publicationCriticalpatent/CS231743B1/en