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February 8 – After 84 days in space, the last crew of the temporary American space station Skylab return to Earth.; February 13–15 – Sagittarius A*, thought to be the location of a supermassive black hole, is identified by Bruce Balick and Robert Brown using the baseline interferometer of the United States National Radio Astronomy Observatory.
In 1974, 3M co-workers Arthur Fry and Spencer Silver invented the now-familiar Post-it Note, with the former creating the paper and the latter developing the glue. First Digital Camera
A timeline of United States inventions (after 1991) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the Contemporary era to the present day, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.
Pages in category "American inventions" The following 200 pages are in this category, out of approximately 828 total. This list may not reflect recent changes .
1974: The lithium-ion battery is invented by M. Stanley Whittingham, and further developed in the 1980s and 1990s by John B. Goodenough, Rachid Yazami and Akira Yoshino. It has impacted modern consumer electronics and electric vehicles. [508] 1974: The Rubik's cube is invented by Ernő Rubik which went on to be the best selling puzzle ever. [509]
April 3 – The 1974 Super Outbreak, at the time the largest series of tornadoes in history, occurs in 13 U.S. states and one Canadian province, leaving over 300 people dead, over 5,000 people injured, and hundreds of millions of dollars in damage.
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