Which country does at gearbox belong to?

Almost all patents of AT gearbox are controlled by American Borgwarner. The following is the relevant information: 1, first use: AT gearbox was first used by General Motors in its Oldsmobile. 2. Common form: Compared with manual gearbox, automatic gearbox is a kind of equipment that can automatically shift gears according to engine speed. It consists of hydraulic torque converter, planetary gear and hydraulic control system. There are three common types of automobile automatic gearbox: hydraulic automatic gearbox, mechanical stepless automatic gearbox and electronically controlled mechanical automatic gearbox.