be installed in relatively inaccessible locations, or used for 'unwatched' or unattended lights. Pintsch gas lights continued to be used for navigation into the 20th century, but after the First World War, Pintsch gas began to be superseded by acetylene as the preferred fuel for unattended navigation lights. By the early 1930s, very few buoys or beacons were still being lit by Pintsch gas. Electric light Early in the twentieth century, Pintsch AG diversified its interests to include filaments for electric lighting, to electric lighting systems, and decorative neon lighting. References External links Biography of C.F. Julius Pintsch 1815 births 1884 deaths Businesspeople from Berlin 19th-century German inventors