who received a patent for the manufacture of chewing gum
William F. Semple William Finley Semple (1832-1923) was a dentist from Mount Vernon, Ohio, commonly referred to as the first person anywhere to patent a chewing gum. On December 28, 1869, Semple filed Patent No. 98,304 with the U.S. Commissioner of Patents. However, Amos Tyler of Toledo, Ohio, patented his chewing gum on July 27 of the same year.[1] John B. Curtis successfully sold his "State of Maine Pure Spruce Gum" in 1848, though he did not patent it.
Fidget spinner Catherine Hettinger, a chemical engineer by training, was initially credited by some news stories to have been the inventor of the fidget spinner, including by media outlets such as The Guardian,[9] The New York Times,[10] and the New York Post.[11] Hettinger filed a patent application for a "spinning toy"[12] in 1993 and a patent was issued, but Hettinger allowed the patent to lapse in 2005 after she could not find a commercial partner.[9][8] A May 2017 Bloomberg News article showed that Hettinger was not the inventor of the fidget spinner, and Hettinger agreed.[8]