Patent Stories
History of the Hot Air Balloon
The history of the hot air balloon from 1783 to Ralph Upson's 1923 patent. How lighter-than-air flight went from royal spectacle to military tool to sport.
Learn moreThe history of the hot air balloon from 1783 to Ralph Upson's 1923 patent. How lighter-than-air flight went from royal spectacle to military tool to sport.
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