Where they are right now is not sure. I believe Dieter Fleischer, responsible for the French longboarding section within the French skate association, still has the drawings of these ramps but he hasn't found them yet.
Notice the handles that stick out from the vertical poles to make them more confortable and give the rider a better pull off stance.
These handles could be moved up and down as needed.
I think the height of the ramp was 1.50 m. It could have been slightly higher.