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Application filed by Jindrich Ing Foltyn, Oldrich Kvasnica, Jan SrnecfiledCriticalJindrich Ing Foltyn
Priority to CS873829ApriorityCriticalpatent/CS262096B1/en
Publication of CS382987A1publicationCriticalpatent/CS382987A1/en
Publication of CS262096B1publicationCriticalpatent/CS262096B1/en