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invention category A group or set of inventions that are classified together because of common characteristics. Invention groups that include Agricultural, Communications, Computing, Energy, Transportation and more.
Timelines of Invention and Technology. Invention and technology timelines tell the history of famous 16th, 17th, 18th, 19th and 20th century events.hare. Learn about the famous inventions of the 19th Century, a period of rapid technological progress that took place during the 1800s, when many of the inventions we still use or know about today were first invented.