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Application filed by Jaroslav Ing Gola, Josef Ing Csc Valnicek, Oldrich Vojkovsky, Vaclav ZlochfiledCriticalJaroslav Ing Gola
Priority to CS834960ApriorityCriticalpatent/CS232532B1/en
Publication of CS496083A1publicationCriticalpatent/CS496083A1/en
Publication of CS232532B1publicationCriticalpatent/CS232532B1/en