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1698 Thomas Savery patents the first steam engine
1850 Benjamin Lane patents gas mask with a breathing apparatus
1987 2 men became 1st hot-air balloon trav1872 Doughnut cutter patents granted to John Blondel, Thomaston, Maine
1953 1st helicopter passenger service (NYC)
552 Origin of Armenian calendar
1866 Indelible pencil patented by Edson P. Clark, Northampton, Massachusetts
1892 1st concrete-paved street built (Bellefountaine, Ohio)
1869 Margarine is patented by Hippolye Méga-Mouriès1850 Harvard Observatory takes 1st photograph of a star (Vega)
1954 Construction of Disneyland commences for use by French Navy
1595 Astronomer Johannes Kepler has an epiphany and develops his theory of the geometrical basis of the universe while teaching in Graz
2017 US scientists calculate total amount plastic ever produced – 8.3 billion tonnes, equal to weight of 1 billion elephants
1983 Dick Smith makes 1st solo helicopter flight around the world
1854 Walter Hunt is awarded the first U.S. patent for a paper shirt collar