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! Year !! Technology/event !! Inventor !! Details
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| 1767 || Semaphore invented || Richard Edgeworth || <ref name="dogs">{{cite web |url=http://www.definitions.net/definition/semaphore |accessdate=December 30, 2017}}</ref> ||
| 1774 || Early telegraph invention || Georges-Louis Le Sage || One wire each for 26 letters, ran between two rooms in same house
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