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Application filed by Boleslav Hemzal, Oto StratilfiledCriticalBoleslav Hemzal
Priority to CS845431ApriorityCriticalpatent/CS244005B1/cs
Publication of CS543184A1publicationCriticalpatent/CS543184A1/cs
Publication of CS244005B1publicationCriticalpatent/CS244005B1/cs