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Badge · Soviet Union
нагрудный знак «Изобретатель СССР»
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“Inventor of the USSR” («Изобретатель СССР») was a breast badge issued in the USSR to the author (or each co-author) of an invention whose first inventor’s certificate was registered in the State Register of Inventions of the USSR after August 20, 1973, provided that the use of the invention in the national economy was confirmed.
Translated from the Russian Wikipedia (article), under CC BY-SA 4.0.