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Application filed by Frantisek Konarek, Jan Ing Startl, Josef Ing Wiewegh, Pavel Ing HolejsovskyfiledCriticalFrantisek Konarek
Priority to CS872207ApriorityCriticalpatent/CS259944B1/cs
Publication of CS220787A1publicationCriticalpatent/CS220787A1/cs
Publication of CS259944B1publicationCriticalpatent/CS259944B1/cs