Here is a short history of the Melz factory. Seems tubes were produced from 1942 until the 80's(?):
Moscow Electric Plant "MELZ" is the oldest in Russia for production of electronic devices. History of the plant began with a workshop for making light bulbs in 1906. Soon workshop has grown to the size of the factory. She launched by 300,000 bulbs per year.
In 1921 was founded the Moscow Association factories tubes . In 1926, automobile designs have been developed and powerful gas-filled tubes . Vacuum tubes produce steel from domestic flint glass. Factories moved with plant production system for streaming. Import radio tubes to Russia stopped. Moscow Electric Plant became the first and largest in the country now - plant. In 1929, all electron tubes factories were placed under the leadership of " the Moscow Electric Plant".
In 1938 the plant was divided into several independent companies . By this time, the emergence of the name of the plant MELZ.
During the Second World War, the factory worked around the clock and releasing the necessary radio tubes . In 1942, the plant began production of tubes . In the same year from besieged Leningrad factory "Svetlana", arrived in Moscow large group of specialists . They, along with specialists MELZ begun to establish pilot production of special generator tubes designed for radar transmitters. In the 60s to establish production of color picture tubes.
In the mid-70s at the plant was organized by central laboratory (CPL), which dealt with the optimization of manufacturing processes electronic devices. In the 80s there was a decline of the plant. Many of its territory emptied. It was only in the mid-90s production began to recover.
In the past few years, special attention is paid to MELZ creation and development of the production of energy-saving light sources: high pressure sodium lamps and compact fluorescent lamps. Just the company started production of glass products for the food industry. But the main activity is the production of electron-optical converters (EOP) 2 and 2 + generations, as well as night vision binoculars with image making false color.
The architecture of the Melz building in Moscow was obviously inspired by tubes:
MELZ is an acronym for Moscow Electric Tube Plant (Moskovsky Elektrolampovy Zavod).