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Application filed by Karel Janda, Jaroslav Kosik, Otto Ing Sofka, Viktora MiloslavfiledCriticalKarel Janda
Priority to CS34985ApriorityCriticalpatent/CS244290B1/en
Publication of CS34985A1publicationCriticalpatent/CS34985A1/en
Publication of CS244290B1publicationCriticalpatent/CS244290B1/en