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Application filed by Ivan Akademik Hrivnak, Jan Ing Bernat, Vaclav Ing Marecek, Kopernicky Ivan, Jaroslav Ing Konecny, Cihal VladimirfiledCriticalIvan Akademik Hrivnak
Priority to CS838758ApriorityCriticalpatent/CS251460B1/en
Publication of CS875883A1publicationCriticalpatent/CS875883A1/en
Publication of CS251460B1publicationCriticalpatent/CS251460B1/en