The story
Founded by Gabriel Borel in 1909.1
Borel founded the company in late 1910, initially based in Neuilly and then Puteaux. The precise legal relationship with the Morane brothers and Raymond Saulnier isn't known, but the company built several aircraft designed by Saulnier in 1910–1911 before the collaboration ended in late 1911.
From Wikipedia’s article on Établissements Borel, shared under CC BY-SA 4.0.3
