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Application filed by Vlastimil Ing Csc Ehrenberger, Rudolf Ing Csc Otava, Jaroslav Ing Gola, Josef Ing Csc Valnicek, Oldrich Vojkovsky, Vaclav ZlochfiledCriticalVlastimil Ing Csc Ehrenberger
Priority to CS855140ApriorityCriticalpatent/CS254770B1/en
Publication of CS514085A1publicationCriticalpatent/CS514085A1/en
Publication of CS254770B1publicationCriticalpatent/CS254770B1/en