The first saucepan-style pressure cooker was launched at the 1939 World's Fair in New York, and rapidly gained popularity throughout the United States and Europe. Apart from enabling reduced cooking times, the product's main selling point was the way it maintained food's vitamin and mineral content. Landers, Frary & Clark had used the trade name "Universal" since the 1890s and manufactured an increasingly diverse range of metal products for the modern kitchen under the moniker, from mousetraps and percolators to can openers, electric ranges, and aluminum cookware.
Gallery label from Counter Space: Design and the Modern Kitchen, September 15, 2010-March 14, 2011 .