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Application filed by Karel Pleskac, Jan Hruby, Ludvik Neumann, Karel JostfiledCriticalKarel Pleskac
Priority to CS876224ApriorityCriticalpatent/CS262537B1/en
Publication of CS622487A1publicationCriticalpatent/CS622487A1/en
Publication of CS262537B1publicationCriticalpatent/CS262537B1/en