B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
Dispositif d'aide a la construction d'un mur a partir d'elements de structure prefabriques, permettant l'approche, le reglage et le positionnement des elements prefabriques