The first safety razor using the new disposable blade went on sale in 1903. Gillette maintained a limited range of models of this new type razor until 1921 when the original Gillette patent expired. In anticipation of the event, Gillette introduced a redesigned razor and offered it at a variety of prices in different cases and finishes, including the long-running “aristocrat". Gillette continued to sell the original razor but instead of pricing it at $5, it was priced at $1, making a Gillette razor truly affordable to every man regardless of economic class. In 1932 the Gillette Blue Blade, so-named because it was dipped in blue lacquer, was introduced. It became one of the most recognizable blades in the world. In 1934 the "twist to open" (TTO) design was instituted, which featured butterfly-like doors that made blade changing much easier than it had been, wherein the razor head had to be detached from the handle.