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Application filed by Jiri Ing Vlastnik, Petr Ing Michalik, Frantisek Ing VeverkafiledCriticalJiri Ing Vlastnik
Priority to CS827072ApriorityCriticalpatent/CS239609B1/en
Publication of CS707282A1publicationCriticalpatent/CS707282A1/en
Publication of CS239609B1publicationCriticalpatent/CS239609B1/en