An early patent for that automatic transmission was granted to Canadian inventor Alfred Horner Munro of Regina in 1923.[twenty] Currently being a steam engineer, Munro created his device to work with compressed air rather than hydraulic fluid, and so it lacked electricity and in no way found professional software.[21] https://gearbox-auto98630.bloguetechno.com/gearbox-kereta-auto-an-overview-67583746