1938 : Company founded by René LEDUC.
Until 1958: the company's activity was aeronautics, building LEDUC aircraft and designing and manufacturing:

• flight servo-controls
• hydraulic circuits with energy accumulation
• the first LEDUC high pressure hydraulic pumps
  
• the first LEDUC hydraulic accumulators.
  

1958: The company converted from aeronautics to hydraulics.

1968: Main activity became production of hydraulic pumps for excavators.

1972: Launch of the first LEDUC pumps for direct flange-mounting on vehicle PTOs: the "L" pumps.

1980: Company activity oriented around:

• axial piston pumps
• hydropneumatic accumulators
• custom hydro-mechanical components and solutions.

1997: Launch of the first variable displacement pumps for PTO mount on trucks, which later gave rise to today's TXV range. 2002: HYDRO RENÉ LEDUC becomes HYDRO LEDUC S.A.S. 2003: Launch of LEDUC bent axis pumps. 2005: Launch of HYDRO LEDUC hydraulic motors (bent axis).