Refrigerant is sold in canisters similar to small propane canisters used in portable gas range. That same year, he attempted suicide with a gas range. Freestanding gas range cooktops have solid slides and controls placed behind the cooktop. We found out that the workers were not authorized to move the gas range. In 1923, Albert H. Tinnerman originated the first all-porcelain enameled gas range with concealed fastenings.