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  2. Timeline of historic inventions - Wikipedia

    en.wikipedia.org/.../Timeline_of_historic_inventions

    4.2.3 1920s. 4.2.4 1930s. 4.2.5 1940 ... The timeline of historic inventions is a chronological list of particularly important or significant technological inventions ...

  3. 1920s - Wikipedia

    en.wikipedia.org/wiki/1920s

    The 1920s (pronounced "nineteen-twenties" often shortened to the "' 20s" or the "Twenties") was a decade that began on January 1, 1920, and ended on December 31, 1929. . Primarily known for the economic boom that occurred in the Western World following the end of World War I (1914–1918), the decade is frequently referred to as the "Roaring Twenties" or the "Jazz Age" in America and Western ...

  4. Timeline of United States inventions (1890–1945) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_United_States...

    This invention was only primarily used with steam locomotives that had booster valves or superchargers to heat the fire even hotter to produce extra power. The coal used was semi-bituminous and bituminous coal only inside the steam locomotives. Sadly, this invention lasted until 1960 when Diesel's fully replaced American railroads. 1943 Slinky

  5. Timeline of United States inventions - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_United_States...

    The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War

  6. The Greatest American Inventions of the Past 50+ Years - AOL

    www.aol.com/greatest-american-inventions-past-50...

    From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.

  7. Category:1920s in technology - Wikipedia

    en.wikipedia.org/wiki/Category:1920s_in_technology

    Pages in category "1920s in technology" This category contains only the following page. This list may not reflect recent changes. C. Coso artifact

  8. 2020s vs. 1920s: Will History Repeat? - AOL

    www.aol.com/finance/2020s-vs-1920s-history...

    If the 2010s are akin to the 1920s – the decade of seeming financial prosperity belied by growing inequality – it might be reasonable to predict the 2020s mirroring the 1930s, when ...

  9. Category:20th-century inventions - Wikipedia

    en.wikipedia.org/wiki/Category:20th-century...

    Pages in category "20th-century inventions" The following 127 pages are in this category, out of 127 total. This list may not reflect recent changes. A.