the enterprise grew quickly, and in a few years established proxies in germany and neighboring european lands (london, paris, milan, genoa, barcelona, breslau (wrocław), st. petersburg, vienna) and overseas (philadelphia). the first foreign branch came into being as "körthing brothers" in manchester. the american branch was opened in 1874. in 1880 the company had 20 staff and 170 workers. the product line was expanded to central heaters, gas scrubbers, gas-, gasoline-, and diesel-motors. körting vacuum brakes could be found in many trains of the time. in 1920, körting also built the first holzwarth-gas turbine.