FIG. 1 is a three-dimensional view of the building block assembly showing my new design;
FIG. 2 is another three-dimensional view of the building block assembly of FIG. 1 from a rear perspective;
FIG. 3 is a left side view of the building block assembly of FIG. 1;
FIG. 4 is an opposite right side view of the building block assembly of FIG. 1;
FIG. 5 is a front major end view of the building block assembly of FIG. 1;
FIG. 6 is a rear minor end view of the building block assembly of FIG. 1;
FIG. 7 is a top view of the building block assembly of FIG. 1;
FIG. 8 is a bottom view of the building block assembly of FIG. 1;
FIG. 9 is three-dimensional view of the retaining bar forming part of the building block assembly of FIG. 1, the retaining bar being shown removed from the building block for clarity of illustration;
FIG. 10 is an end view of the retaining bar of FIG. 9, the retaining bar being shown removed from the building block for clarity of illustration; and,
FIG. 11 is a side view of the retaining bar of FIG. 9, the retaining bar being shown removed from the building block for clarity of illustration.
In the figures, the complementary retaining bar has been shown with a symbolic break. The portion between the break lines of the symbolic break forms no part of the claimed design.