Safety razor be a generic category of their own and not a variety of safety razor. The similarities between single-edge cartridge blade razors and the classic injector razor do, however, provide equal justification for treating both categories contiguously. In 1974 Bic introduced the disposable razor. Instead of being a razor with a disposable blade, the entire razor was manufactured to be disposable. Gillette's response was the Good News disposable razor which was launched on the US market in 1976 before the Bic disposable was made available on that market. Shortly thereafter, Gillette modified the Good News construction to add an aloe strip
Segal Lock and Hardware Company stock was placed privately with no public offering made. The company acquired a controlling interest in the Norwalk Lock Company and the Universal Razor Blade Corporation in 1929. Stockholders approved an increase in the authorized stock of the company to 400,000 shares, of which 300,000 shares were outstanding. The corporation introduced a single-unit safety razor in late 1930, a low-priced product designed to use only Segal double-edged blades. The following year Segal placed on the market the Unimatic Segal Razor, a one-piece razor which accepted a double-edged blade. The firm entered a contracted with United Cigar Stores in June 1931.