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Application filed by Ambroz Frantisek, Kolesar Jan, Filip Bohumil, Chovanec Jan, Mikitka Vladimir, Imrich Ing Petrik, Jan Bindas, Lichvar Milan, Hronec Milan, Olejnik Vincent, Juhas StanislavfiledCriticalAmbroz Frantisek
Priority to CS884949ApriorityCriticalpatent/CS271737B1/en
Publication of CS494988A1publicationCriticalpatent/CS494988A1/en
Publication of CS271737B1publicationCriticalpatent/CS271737B1/en