Robert A. MacDonald

BUILDING UNIT WITH COBBLE TOP

IRREGULAR TRAPEZOIDAL BUILDING UNIT AND WALL STRUCTURE INCLUDING SAME

Building unit with mating sides

Permeable surface covering units and permeable surface covering

Slant wall block and wall section including same

Multi-textured or patterned exposed surface of a landscaping block, wall block, patio block and block system

BLOCKS, BLOCK SYSTEMS AND METHODS OF MAKING BLOCKS

BLOCK, BLOCK SYSTEM AND METHOD OF MAKING A BLOCK

CONNECTION SURFACE FOR A STRUCTURAL UNIT AND METHOD OF MAKING SAME

EDGER HAVING CONNECTION SURFACES