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.
While Sir Hiram was the first to patent and is thus credited with the invention of the curling iron in modern times, his was by no means the first curling iron to exist in the world. At the Oriental Institute at the University of Chicago, they have in their collections two Bronze-age curling irons from ancient Egypt.