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Application filed by Svec Frantisek, Eliska Doc Ing Csc Kalalova, Kalal Jaroslav, Libor Ing Mastny, Vratislav Ing Csc Hlubucek, Jaromir Ing SramekfiledCriticalSvec Frantisek
Priority to CS857029ApriorityCriticalpatent/CS253047B1/en
Publication of CS702985A1publicationCriticalpatent/CS702985A1/en
Publication of CS253047B1publicationCriticalpatent/CS253047B1/en