1850: Millard Fillmore president of the USA 1850-1853. Millard Fillmore, vice president under Zachary Taylor, sworn in as president after Taylor's death.
1850: Joel Houghton was granted the first dishwasher patent.
2
1851
1851: Isaac Singer invents a sewing machine.
3
1853
1853: Franklin Pierce president of the USA 1853-1857.
4
1854
1854: John Tyndall demonstrates the principles of fiber optics.
1850 - 1854 (~ 3 years)