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Application filed by Brokl Zdenek, Pavel Ing Zacek, Otakar Ing Bartos, Vladimir Vlcek, Jiri Rigo, Vaclavek MiroslavfiledCriticalBrokl Zdenek
Priority to CS856528ApriorityCriticalpatent/CS251423B1/en
Publication of CS652885A1publicationCriticalpatent/CS652885A1/en
Publication of CS251423B1publicationCriticalpatent/CS251423B1/en