Safety razor the razor to sever the hair without danger of cutting the skin." The Kampfe Brothers produced razors under their own name following the 1880 patent and improved the design in a series of subsequent patents. These models were manufactured under the "Star Safety Razor" brand. A third pivotal innovation was a safety razor using a disposable double-edge blade that King Camp Gillette submitted a patent application for in 1901 and was granted in 1904. The success of Gillette's invention was largely a result of his having been awarded a contract to supply the American troops in World War I with
Safety razor Rockwell, ShaveCraft, Van der Hagen, Weishi and Wilkinson Sword, with several of them producing razors that are marketed under other brands. Often different models of razors within a brand share the same razor-head designs, differing primarily in the color, length, texture, material(s), and weight of the handles. Three-piece razors generally have interchangeable handles, and some companies specialize in manufacturing custom or high-end replacement handles. Variations in razor head designs include straight safety bar (SB), open comb (OC)(toothed) bar, adjustable razors, and slant bar razors. The slant bar was a common design in Germany in which the blade is slightly angled