John Harvey Kellogg and in 1898 released the first batch of Sanitas Toasted Corn Flakes. A modified version with a longer shelf life was released in 1902. By that time, both "Granose Biscuits" and "Granose Flakes" were available. Will Kellogg continued to develop and market flaked cereal. When he proposed adding sugar to the flakes, John would not agree to the change. So, in 1906, Will started his own company, the Battle Creek Toasted Corn Flake Company. This marked the start of a decades-long feud between the brothers. Will's Battle Creek Toasted Corn Flake Company would eventually became the Kellogg Company, while John
Kellogg Switchboard & Supply Company switchboard, which became the flagship product of the new company. This switchboard offered greater flexibility and efficiency than earlier designs in handling a large telephone subscriber base at urban exchanges. Kellogg primarily supplied local independent telephone companies. In 1901, Kellogg fell seriously ill. His brother-in-law, Wallace DeWolf, proved to be a poor manager. Concerned that the company might fail, DeWolf secretly sold a majority of Kellogg's stock to Western Electric. Easily manipulated by Western Electric executives and legal advisors, DeWolf also helped Western Electric attempt to take over the country's other large telephone equipment manufacturer, Stromberg-Carlson. A bitter stockholder fight