sentences:  The company was founded in 1916 by Philip Rogers Mallory, and initially manufactured tungsten wire for lamp filaments.In 1924 the company moved its headquarters to 3029 E. Washington Street in Indianapolis, Indiana and had several divisions besides Duracell batteries including Mallory Capacitor Company with manufacturing plants in Greencastle, Indiana, Huntsville, Alabama, Waynesboro, Tennessee, and Glasgow, Kentucky; Mallory Controls with a manufacturing plant in Frankfort, Indiana; and Mallory Distributor Products in Indianapolis.In 1942 inventor Samuel Ruben with Mallory developed a practical balanced form of mercury battery which was used for portable electronic equipment during the Second World War.