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Application filed by Karel Belohoubek, Josef Dipl Tech Novotny, Vlastimil Ing Csc Svoboda, Frantisek Ing HejrovskyfiledCriticalKarel Belohoubek
Priority to CS868673ApriorityCriticalpatent/CS262857B1/en
Publication of CS867386A1publicationCriticalpatent/CS867386A1/en
Publication of CS262857B1publicationCriticalpatent/CS262857B1/en