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Application filed by Miroslav Holec, Frantisek Ing Ott, Tuma ZdenekfiledCriticalMiroslav Holec
Priority to CS866332ApriorityCriticalpatent/CS260573B1/en
Publication of CS633286A1publicationCriticalpatent/CS633286A1/en
Publication of CS260573B1publicationCriticalpatent/CS260573B1/en