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Application filed by Josef Ing Csc Ripka, Vaclav Vobornik, Jan Junek, Ludnila Lihtarova, Frantisek JarosfiledCriticalJosef Ing Csc Ripka
Priority to CS831924ApriorityCriticalpatent/CS241417B1/en
Publication of CS192483A1publicationCriticalpatent/CS192483A1/en
Publication of CS241417B1publicationCriticalpatent/CS241417B1/en