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Application filed by Bernat Leopold, Jan Oravec, Juraj Ing SulcfiledCriticalBernat Leopold
Priority to CS86697ApriorityCriticalpatent/CS254929B1/en
Publication of CS69786A1publicationCriticalpatent/CS69786A1/en
Publication of CS254929B1publicationCriticalpatent/CS254929B1/en