Timeline of Medical HIstory By beautyqueen Jan 1, 1440 Printing Press invented by Johannes Guttenberg Jan 1, 1543 Andreas Vesalius made first anatomical drawings from dissected human bodies Jan 1, 1628 William Harvey described the circulation of blood to and from the heart Jan 1, 1714 Gabriel Fahrenheit created first mercury thermometer Jan 1, 1747 Anton Von Leeuwenhoek discovered citrus fruits prevent scurvy Jan 1, 1784 Ben Franklin invented the bifocals Jan 1, 1796 Smallpox vaccine invented by Edward Jenner Jan 1, 1816 Rene Laennec invented the stethoscope Jan 1, 1844 Dr. Horace Wells uses nitrous oxide as an anesthetic Jan 1, 1847 Ignaz Semmelweiss identified cause of infections and instituted hand washing Jan 1, 1849 Elizabeth Blackwell become first woman to qualify as a doctor in the U.S. Jan 1, 1862 Louis Pasteur pasteurized milk to kill bacteria Jan 1, 1865 Gregory Mendel developed patterns of heredity Jan 1, 1865 Joseph Lister used antesptics during surgery to prevent infection Jan 1, 1876 Alexander Graham Bell invents the telephone Jan 1, 1881 Clara Barton founded the American Red Cross Jan 1, 1882 Louis Pasteur discovered vaccine for rabbies Jan 1, 1895 Modern ambulance invented in Paris Jan 1, 1895 Wilhelm Roentgen discovered x-rays Jan 1, 1898 Felix Hoffman invented aspirin Jan 1, 1901 Karl Lansteiner discovered different human bloodtypes Jan 1, 1907 First helicopter flown with a pilot Jan 1, 1910 Marie Curie isolated radium Jan 1, 1922 Insulin was first used to treat diabetes Jan 1, 1928 Alexander Fleming discovered penicillin Period: Jan 1, 1939 to Jan 1, 1942 John Atanasoff and Clifford Berry invent the electronic computer Jan 1, 1949 Pager invented by Al Gros Jan 1, 1950 John Hopps invented the cardiac pacemaker Jan 1, 1955 Jonas Salk developed first polio vaccine Jan 1, 1961 First ultrasound used for pregnancies Jan 1, 1963 Albert Sabin created the oral polio vaccine Jan 1, 1967 Christian Bernard performed first heart transplant surgery Jan 1, 1978 Louise Brown, first test-tube baby born in Great Britain Jan 1, 1980 Smallpox is eradicted Jan 1, 1983 Gene Therapy discoverd by researchers Jan 1, 1983 Aids is discovered Jan 1, 1996 Dolly the Sheep first cloned for tissue clonging Jan 1, 1998 James Thompson developed embryonic stem cell lines