75862094
Nov 29, 1999
Mar 6, 2001
STRUCTURAL ELEMENTS AND BUILDING MATERIALS MADE OF CONCRETE AND NATURAL STONE, NAMELY, BUILDING STONES, MASONRY UNITS, PAVING BLOCKS AND TILES FOR PLACEMENT ON THE GROUND AND FOR ATTACHMENT TO FACADES; PALISADES, TROUGHS, AND BENCHES ALL MADE OF CONCRETE AND NATURAL STONE
Nonmetallic Building Materials