72333197
Jul 22, 1969
Jun 8, 1971
FORMS FOR CASTING CONCRETE SWIMMING POOL DECKS AND SIMILAR CAST STRUCTURES, CONCRETE ADD MIX, CAULKING COMPOUNDS, EXPANSION JOINTS, CONSISTING OF STRIPS FOR INSERTION IN THE CRACK BETWEEN CONCRETE SLABS, DRAIN PIPES, AND MOLDS FOR PRODUCING ORNAMENTAL TEXTURED FINISHES ON CONCRETE SURFACES, AND POWDER FOR APPLYING TO CONCRETE SURFACES TO RESIST EVAPORATION AFTER TROWELING
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