An early rubber patent on April 29, 1813 helped lay the foundation for Michigan’s automotive industry, where rubber became essential to building cars.
April 29 in History: Berlin Wall Falls, Zipper Patented, and Royal Wedding of William and Kate
Explore April 29 in history, including the fall of the Berlin Wall, the patenting of the zipper, and the royal wedding of Prince William and Kate Middleton. (READ MORE)