In 1892, Thomas Ahearn filed a patent for an "Electric Oven" in Canada. In 1897, William Hadaway patented an "Automatically Controlled Electric Oven" in the US. In 1905, David Curle Smith applied for a patent for an electric stove with an oven above hotplates and a grill tray between. Today, electric stoves are commonly made of stainless steel with double layers and many more options for cooking compared to early electric stove designs from over a century ago.