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Publication date
Application filed by Frantisek Ing Hanik, Hrstka PavelfiledCriticalFrantisek Ing Hanik
Priority to CS872350ApriorityCriticalpatent/CS260718B1/en
Publication of CS235087A1publicationCriticalpatent/CS235087A1/en
Publication of CS260718B1publicationCriticalpatent/CS260718B1/en