Dux Factory
 Dux (also known as Duks or Dooks) was a bicycle/automobile/aircraft factory in Moscow Russia before and during World War I. The factory was founded in 1893. The name comes from the Latin word dux (leader). Y. A. Meller was owner of the factory which was primarily focused on the building of French aircraft designs. The factory is still active at its original location and returned to its original name several years ago.