Edison and Swan Electric Light Company Edison and Swan Electric Light Company The Edison and Swan Electric Light Company Limited was a manufacturer of incandescent lamp bulbs and other electrical goods. It was formed in 1883 with the name Edison & Swan United Electric Light Company with the merger of the Swan United Electric Company and the Edison Electric Light Company. Thomas Edison established the Edison Electric Light Company in 1878. Joseph Swan established the Swan United Electric Light Company in 1881. In 1882 the American Edison Company of Thomas Edison sued Swan, claiming infringement of Edison's U.S. patent of 1879; however, they never made it
Moscow Electric Lamp Plant and the Electrovacuum Instrument Plant in Voronezh. The Moscow Electrovacuum Instrument Plant, with its two associated special design bureaus, specializes in developing and producing a variety of vacuum tube products (photoelectric cells, xenon and mercury tubes, gas-filled and gas discharge devices, photoelectronic multipliers and others). This plant dates back to before World War II, and was known, until 1972, as the Moscow Electric Lamp Plant (MELZ). The Khromatron Plant in Moscow and the Electrovacuum Instrument Plant in Voronezh, produce mainly CRT's for color television. Moscow Electric Lamp Plant Moscow Electric Lamp Plant () is a company based in Moscow, Russia.