Unit 6 Stephen Boese By aslan73 Jan 1, 1775 Steam Engine by James Watt blahalbhjal Jan 1, 1793 Cotton Gin by Eli Whitney Jan 1, 1798 Interchangeable Parts by Eli Whitney Jan 1, 1807 Steamboat by Robert Fulton Jan 1, 1813 Lowell Mills by Francis Lowell Jan 1, 1831 Mechanical Reaper by Cyrus McCormick Jan 1, 1837 Steel Plow by John Deere Jan 1, 1840 Telegraph by Samuel Morse Jan 1, 1846 Sewing Machine by Isaac Singer and Elias Howe Jan 1, 1856 Steel Process by Henry Bessemer