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Information × Registration Number 2114U002144, Article popup.category Thesis Title popup.author popup.publication 01-01-2014 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/45618 popup.publisher Sumy State University Description We all know about the amazing world of discoveries and discoverers. Some of them were invented by our compatriots, others were made by foreigners. But there are cases when foreign scientists patented inventions that were earlier made by our home scientists. popup.nrat_date 2025-05-12 Close