Pictures of KFC History If he pre-cooked the chicken in advance of orders, there was sometimes wastage at day’s end. In 1939, the first commercial pressure cookers were released onto the market, mostly designed for steaming vegetables. Previous Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 2017-08-24 spiel