| |
Date |
Event(s) |
| 1 | 1920 | - 1920—1920: HISTORY: Tommy Gun patented by John T Thompson..
|
| 2 | 1921 | - 1921—1921: HISTORY: Artificial life begins .The first robot built.
- 1921—1921: POLITICAL: Woodrow Wilson, President.
- 4 Mar 1921—31 Jul 1921: POLITICAL: Warren Harding, President.Warren Harding dies of an embolism in San Francisco. He had taken ill on 31 Jul 1921.
|
| 3 | 1922 | - 1922—1922: HISTORY: .Insulin invented by Sir Frederick Grant Banting.
|
| 4 | 1923 | - 1923—1923: HISTORY: .Garrett A. Morgan invents a traffic signal.
|
| 5 | 1924 | - 1924—1924: HISTORY: .Dynamic loudspeaker invented by Rice and Kellogg.
|
| 6 | 1925 | - 1925—1925: HISTORY: .Mechanical television a precursor to the modern television, invented by John Logie Baird.
|
| 7 | 1926 | - 1926—1926: HISTORY: .Robert H. Goddard invents liquid-fueled rockets.
|
| 8 | 1927 | - 1927—1927: HISTORY: .JWA Morrison invents the first quartz crystal watch.
|
| 9 | 1928 | - 1928—1928: HISTORY: Penecillin Developed.Scottish biologist Alexander Fleming discovers penicillin.
|
| 10 | 1929 | - 1929—1929: HISTORY: .American, Paul Galvin invents the car radio.
- 1929—1929: POLITICAL: .Calvin Coolidge president of the USA. Calvin Coolidge, vice president under Warren Harding, sworn in as president the day after Harding dies.
|
| 11 | 1931 | - 1931—1931: HISTORY: .Harold Edgerton invented stop-action photography.
|
| 12 | 1932 | - 1932—1932: HISTORY: .Polaroid photography invented by Edwin Herbert Land.
|
| 13 | 1933 | - 1933—1933: HISTORY: .Frequency modulation (FM radio) invented by Edwin Howard Armstrong.
- 1933—1933: POLITICAL: .Herbert Hoover president of the USA.
|
| 14 | 1934 | - 1934—1934: HISTORY: .Charles Darrow claims he invented the game Monopoly.
|
| 15 | 1935 | - 1935—1935: HISTORY: .Wallace Carothers and DuPont Labs invents nylon (polymer 6.6.).
|
| 16 | 1936 | - 1936—1936: HISTORY: .Bell Labs invents the voice recognition machine.
- 1936—1936: ROYAL: .George V. Ruler of England.
- 20 Jan 1936—10 Dec 1936: ROYAL: Second son of Edward VII, married Princess Mary of Teck..Accession, Jan 20, abdication, Dec 10.
|
| 17 | 1937 | - 1937—1937: HISTORY: .Chester F. Carlson invents the photocopier.
|
| 18 | 1938 | - 1938—1938: HISTORY: .Ballpoint pen invented by Ladislo Biro.
|
| 19 | 1939 | - 1939—1939: HISTORY: .Igor Sikorsky invents the first successful helicopter.
|
| 20 | 1940 | - 1940—1940: HISTORY: .Peter Goldmark invents modern color television system.
|
| 21 | 1941 | - 1941—1941: NATIVE AMERICAN: COMANCHE WARRIORS AGAIN VOLUNTEER FOR SERVICE IN EUROPE, CODE TALKERS USE THE COMANCHE LANGUAGE IN D-DAY INVASION AND PATTON's TANK BATTALION TO SECURE VICTORY FOR ALLIED FORCES DURING WWII..[more]
- 1941—1941: NATIVE AMERICAN: Comanche Warriors again volunteer for service in Europe, Code Talkers use the Comanche Language in D-Day Invasion and Patton's tank battalion to secure victory for allied forces during WWII..
|
| 22 | 1943 | - 1943—1943: HISTORY: .Richard James invents the slinky.
|
| 23 | 1944 | - 1944—1944: HISTORY: .Kidney dialysis machine invented by Willem Kolff.
|
1920 - 1944 (24 years)
