TTH Timeline 05.03.2020 #1 By Theo Hallie 1942 Franklin D. Roosevelt in his last term 1945 Harry S. Truman become president 1945 World War II Ends 1945 Atomic bombs falls over Hiroshima 1946 Tupperare invented 1947 Defibrillator invented 1948 Hair Spray invented 1949 Aerosol paint invented 1950 Teleprompter invented 1951 Wet suit invented 1952 Airbag invented