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Hedy Lamarr, actress and inventor. The Inventors' Day (German: Tag der Erfinder) in the German-speaking countries Germany, Austria and Switzerland is celebrated on 9 November, the birthday of the Austrian-born inventor and Hollywood actress Hedy Lamarr whose main invention was the frequency-hopped spread spectrum 1942.
The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.
Lloyd Trammell (born 1953), U.S. – inventor in the field of dimensional sound processing Richard Trevithick (1771–1833), UK – high-pressure steam engine , first full-scale steam locomotive Franc Trkman (1903–1978), Slovenia – electrical switches, accessories for opening windows
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
Once a month, the company hosts an "Inventors Day" where entrepreneurs in the U.S. come to pitch their invention to Khubani and his team. "Inventors Days" are held in several U.S. states, with past locations including New Jersey, Los Angeles, Las Vegas and Chicago. [7]
Much like how Memorial Day symbolizes the start of summer, Labor Day is emblematic of the season's end, despite the fact that the autumn equinox doesn't officially arrive until Sept. 22.
It is celebrated on the first Monday in September every year
[nb 2] They also helped contribute to improve aerodynamics by designing a "thick wing" long before other inventors. [citation needed] Ismail ibn Hammad al-Jawhari † unk c. 1005 Kazakhstan: Design Construction Aviator Pre-history Glider (†) attempted flight from the roof of the Nishapur Mosque in Khorosan (c. 1005). [10] Frederick W. "Casey ...