This was because Walter Kidde & Company had to adapt their products that were meant for peacetime to those to be used during wartime. After Walter Kidde's death in 1943 the company was passed down to his son John Kidde.
Due to World War II, Walter Kidde & Company needed to adapt their products designed for peaceful times to meet wartime demands. After Walter Kidde's death in 1943, the business passed down to his son, John Kidde.