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1825, Feb 81882, Apr 14
a French engineer. In 1852, he invented the steam injector and the powered airship. Giffard was granted a patent for the injector on 8 May 1858. Unusually, he had thoroughly worked out the theory of this invention before making any experimental instrument, having explained the idea in 1850. Others had worked on using jets, particularly Bourdon who patented a very similar device in 1857.
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09/24/1852-Henri Giffard, a French engineer, makes first dirigible flight
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