This 150 CP Burner is not stamped with the butterfly as was the J&C production. This could be a Markhbeein later production in the 20's/30's. The patent is from Léon Guilbert in 1908 and was also fitted on table and wall lamps. Leon Guilbert sold the heating and lighting branch of his firm in 1919 to Maurice Juchat and .... Corre. Leon Guilbert is very well known for his production of blowtorch (Express brand) J&C, 39 rue Sainte Croix de la Bretonnerie, Paris, IV, was still in activité at the end of 30's.