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