DIFF Subgroup
C04B 22/068 Full Title
Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators > Oxides, Hydroxides (C04B22/0013 takes precedence)
C04B 22/068 Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators > Oxides, Hydroxides (C04B22/0013 takes precedence)