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Application filed by Stehno Jaroslav, Frantisek Talacko, Vaclav Ing MachatafiledCriticalStehno Jaroslav
Priority to CS848830ApriorityCriticalpatent/CS240250B1/en
Publication of CS883084A1publicationCriticalpatent/CS883084A1/en
Publication of CS240250B1publicationCriticalpatent/CS240250B1/en