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The 20th century
1,560 inventions and discoveries
| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| Trà Kiệu altar | 1901 | Henri Parmentier | altar |
| Vacuum cleaner | 1901 | Hubert Cecil Booth | — |
| Academy Chronicle | 1903 | Vsevolod Sreznevsky | Lithuanian Chronicles |
| 506 Marion | February 17, 1903 | Raymond Smith Dugan | asteroid |
| Bonagente continuous track | 1904 | Crispino Bonagente | continuous track |
| Avalokiteshvara of Chaiya | 1905 | Damrong Rajanubhab | icon |
| C/1907 L2 (Daniel) | June 9, 1907 | — | non-periodic comet |
| 673 Edda | September 20, 1908 | Joel Hastings Metcalf | asteroid |
| Hakuhō Buddha | 1909 | Jōe Shibata | Buddharupa |
| Charcot Island | January 11, 1910 | Jean-Baptiste Charcot | island |
| Crispine Cave | February 16, 1910 | Stanislas Clastrier | cave |
| Buddha | 1911 | Henri Parmentier | statue |
| Cuirasse Decauville | 1911 | Decauville | — |
| Vinh Hung tower | 1911 | Étienne Lunet de Lajonquière | tower |
| Pisot–Vijayaraghavan number | 1912 | Axel Thue | mathematical concept |
| Rotoscoping | 1914 | Max Fleischer | animation technique |
| Living matter | 1916 | Vladimir Vernadsky | biosphere |
| Collapsible seat | 1917 | Armando Salati | sanitary engineering |
| Han Yuan Volume 30 | 1917 | Katsumi Kuroita | Kotenseki |
| Protactinium | 1917 | Kazimierz Fajans | chemical element |
| Zingerone | 1917 | Hiroshi Nomura | type of chemical entity |
| Great Rift | 1919 | Edward Emerson Barnard | dark nebula |
| Japanese-style baseball | 1919 | Sakae Suzuka | type of sport |
| Kondratiev wave | 1920 | Nikolai Kondratiev | — |
| Path analysis | 1920 | Sewall Wright | statistical method |
| Textile, AO 28445, Department of Near Eastern Antiquities of the Louvre | 1920 | Franz Cumont | archaeological artefact |
| Křovák's projection | 1922 | Josef Křovák | conformal map projection |
| 3682 Welther | July 12, 1923 | Karl Wilhelm Reinmuth | asteroid |
| Musashi Bank | 1925 | Japanese corvette Musashi | ocean bank |
| Pilgrim flask (E 10094) | 1926 | Fernand Bisson de la Roque | ampoule |
| Weathering steel | 1926 | U.S. Steel | type of mixture of chemical entities |
| Čech cohomology | 1927 | Pavel Aleksandrov | cohomology |
| Nok Village | 1928 | Colonel Dent | archaeological culture |
| Cape Northrop | December 20, 1928 | Hubert Wilkins | peninsula |
| 8604 Vanier | August 12, 1929 | Charles John Krieger | asteroid |
| Electromechanical organ | 1930 | Laurens Hammond | — |
| Hammond organ | 1930 | Laurens Hammond | musical instrument model |
| T. A. Boor traffic light | 1930 | T. A. Boor | traffic light |
| Deuterium | 1931 | Harold Urey | isotope of hydrogen |
| Rangertone | 1931 | Richard H. Ranger | — |
| 3775 Ellenbeth | October 6, 1931 | Clyde Tombaugh | asteroid |
| 2897 Ole Römer | February 5, 1932 | Karl Wilhelm Reinmuth | asteroid |
| 3937 Bretagnon | March 14, 1932 | Karl Wilhelm Reinmuth | asteroid |
| 2856 Röser | April 14, 1933 | Karl Wilhelm Reinmuth | asteroid |
| 2957 Tatsuo | February 5, 1934 | Karl Wilhelm Reinmuth | asteroid |
| Bronze Lamp in the Shape of a Kneeling Man | 1935 | Olov Janse | lamp |
| Technetium | 1937 | Emilio G. Segrè | chemical element |
| 4680 Lohrmann | August 31, 1937 | Hans-Ullrich Sandig | asteroid |
| 4723 Wolfgangmattig | October 11, 1937 | Karl Wilhelm Reinmuth | asteroid |
| Neptunium | 1940 | Edwin McMillan | chemical element |
| Gunkanmaki | 1941 | Ginza Kyubey | — |
| Plutonium | 1941 | Joseph W. Kennedy | chemical element |
| Radio proximity fuze | 1942 | James A. Van Allen | — |
| 3446 Combes | March 12, 1942 | Karl Wilhelm Reinmuth | asteroid |
| Treatise of Luís Fróis, S.J. (1585) on the contrast of the morals between Europe and Japan | 1946 | Josef Franz Schütte | literary work |
| Kaldo converter | 1948 | Bo Kalling | process |
| Katsukarē | 1948 | Ginza Swiss | — |
| 3938 Chapront | August 2, 1949 | Karl Wilhelm Reinmuth | asteroid |
| Chicken nugget | 1950 | Robert C. Baker | — |
| 3440 Stampfer | February 17, 1950 | Karl Wilhelm Reinmuth | asteroid |