Raimey,

Both Dumoulin and Francotte were founding members of FN in 1888. Dumoulin had 600 preferred shares and 200 common shares.
Francotte had 0 preferred and 200 common.
Henri Pieper was the major share holder with 1200 preferred shares and 200 common.
They all maintained their own shops.

Auguste Francotte and Claude Gaier wrote Ars Mechicania, the history of Fabrique Nationle.

I think there still much to understand.

Pete