Articulating task lamp with a gray shade and two knuckle joints by O.C. White, circa 1910. The lamp has a classic knob at each patented joint and the fixture is ready to be mounted to a flat surface. Otis White, a dentist by trade, patented his articulating joint lights in the late-19th-century and gained notoriety as a top quality lighting manufacturer in the early-20th-century. Each arm measures 20″L.