And a kittenâs teeth first come in between two to four weeks; their more permanent set appears at around four months of age. So if you open a catâs mouth and find permanent, white teeth, the feline is likely to be around a year old. popular misconception is that cats age seven years (in human years) for each calendar year. In fact, feline aging is much more rapid during the first two years of life.
Sarah Boone (1832-1904) was an African American inventor who on April 26, 1892, obtained United States patent rights for her improvements to the ironing board.
In 1834 Ethel H. Porter, of Lincolnton, patented her invention related to cutting feed for horses and cattle. This was the first known patent issued to a North Carolina woman. In 1859 Abigail Carter, of Clinton, invented a pair of overalls designed for her husband, who was a railroad engineer. These sturdy overalls wore so well that other railroad men began asking for them. Carter opened a business and became the first manufacturer of overalls in the United States.