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Soft contact lenses? Synthetic diamonds? That's two off the top of my head.

• PerfectDlite 9y ago
  Soft contact lenses were invented by Czech scientists. Synthetic diamonds were created by French chemist in 19th century.
  • avmich 9y ago
    And of course Russians perfected rocket technology way in XIX century, using solid rockets as a weapon. What are you trying to prove? That inventions aren't done in vacuum and everybody stands on the shoulders of giants coming before him? Or you literally believe that USA had a half century Cold War with opponent who can't invent a thing?
    • PerfectDlite 9y ago
      > And of course Russians perfected rocket technology way in XIX century, using solid rockets as a weapon. Russians? Not Chinese or British or Americans, but Russians? I'm amazed on number of Russian myths here.