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Sir Hiram Stevens Maxim (February 5, 1840 – November 24, 1916) was an American inventor who emigrated to the United Kingdom at the age of 41, although he remained an American citizen until he became a naturalized British subject in 1900. He was the inventor of the Maxim Gun – the first portable, fully automatic machine gun – and held patents on mechanical devices such as a mousetrap, hair-curling irons, and steam pumps. He laid claim to inventing the lightbulb, and even experimented with powered flight, but his large aircraft designs were never successful. However, his "Captive Flying Machine" amusement ride, designed as a means by which to fund his research while generating public interest in flight, was highly successful.