Barbier, Benard, et Turenne

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Barbier, Benard, et Turenne (BBT) was a French company founded in 1862, specializing in the manufacture of spotlights, Fresnel lenses for lighthouses, and lighting systems.[1] It was the world's leading producer of lighthouse beacons from the end of the 19th century onwards. It dissolved in 1982.[2]

  1. ^ Barbier Benard Turenne Archived 2014-01-29 at the Wayback Machine; BBT finances Archived 2021-12-26 at the Wayback Machine;BBT finances Archived 2021-12-26 at the Wayback Machine
  2. ^ "BBT". Archived from the original on 2014-01-29. Retrieved 2015-10-30.