1905

• Georg Knorr founds Knorr-Bremse GmbH in Berlin

1923-1939

• Air brakes for freight trains developed
• The company rises to become the largest brake manufacturer for rail vehicles in Europe

1923-1939

• The first air brakes for commercial vehicles are patented.
• The Hildebrand-Knorr braking system becomes the standard in 17 countries.
• 1939: 90% of all German 7-16 t trucks are equipped with Knorr-Bremse systems