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Application filed by Pavol Ing Kalafus, Jan Ing Celuch, Eugen Ing NachajfiledCriticalPavol Ing Kalafus
Priority to CS88130ApriorityCriticalpatent/CS270517B1/en
Publication of CS13088A1publicationCriticalpatent/CS13088A1/en
Publication of CS270517B1publicationCriticalpatent/CS270517B1/en