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Application filed by Boleslav Hemzal, Oto StratilfiledCriticalBoleslav Hemzal
Priority to CS844040ApriorityCriticalpatent/CS241176B1/en
Publication of CS404084A1publicationCriticalpatent/CS404084A1/en
Publication of CS241176B1publicationCriticalpatent/CS241176B1/en