Noù Boyer et Cie 30 avenue de la Grande Armée, Paris
Exhibited at the Salon des Tuileries in 1899 tricycles and quadris, and built a bicyclette branded Phebus with chain drive to the rear wheel from an engine mounted behind the seat.
1899 Motor Show, Islington
N.B. Bonnet & Guyonnet built a Phebus motorcycle 1907~1910 and possibly as late as 1918. See French Marques (B)
Sources: Bourdache p91. Graces Guide.