Philips or Philips' Gloeilampenfabrieken, Eindhoven.

The Philips incandescent lamp factory, founded in 1891 by Frederik Philips, began producing electron tubes in 1917. Philips started producing complete home radios and became one of the most important radio manufacturers in the world by the mid-1930s; later, some commercial receivers, measuring and workshop equipment, etc. were added to the production range.