71588546
Nov 30, 1949
Nov 18, 1952
CEMENTITIOUS INORGANIC MATERIAL IN POWDERED SOLID FORM WHICH IS MIXED WITH WATER TO FORM A WATER RESISTANT COATING TO BE APPLIED TO THE SURFACE OF MASONRY WALLS, AND STRUCTURES OF CEMENT, CONCRETE, CINDER BLOCKS, STUCCO, AND SIMILAR CEMENTITIOUS PRODUCTS
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