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Application filed by Vaclav Ing Kozmik, Dedek Vaclav, Palecek Jaroslav, Kubelka Vladimir, Mostecky Jiri, Vesely Ivan, Zak BohumilfiledCriticalVaclav Ing Kozmik
Priority to CS861973ApriorityCriticalpatent/CS253326B1/en
Publication of CS197386A1publicationCriticalpatent/CS197386A1/en
Publication of CS253326B1publicationCriticalpatent/CS253326B1/en