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Inventions
When is National Inventors' Day in the USA? - search




Who, in 1879, invented the light bulb? - search



When died the inventor of the revolver, Samuel Colt? - search





Who has invented the knitting machine in 1589? - search



In which year and by who was the telephone invented? - search





Who invented the World Wide Web (www)? - search




What is the oldest known date of which scientists are sure that a compass is made/used? - search





What happened in 1948? - search





In what year was the barometer invented? - search





In what year was the radio invented? - search





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