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Application filed by Vach Vladimir, Vlastimil Ing Kotva, Krabec MiroslavfiledCriticalVach Vladimir
Priority to CS837695ApriorityCriticalpatent/CS239672B1/cs
Publication of CS769583A1publicationCriticalpatent/CS769583A1/cs
Publication of CS239672B1publicationCriticalpatent/CS239672B1/cs