チャーチル歩兵戦車
The company obtained a patent for a tank transmission using controlled differential steering system, known as the Merritt-Brown system, devised by Dr. H. E. Merritt, Director of Tank Design at Woolwich Arsenal, in 1935. The first vehicle to use this system was the Churchill tank, and it was subsequently used on the Centurion tank and the Conqueror tank, as well as the Tortoise heavy tank.