72241149
Mar 16, 1966
Sep 5, 1967
EXPANSION JOINT MATERIALS-NAMELY, COMPOUNDS WHICH ALLOW FOR EXPANDING AND CONTRACTING OF THE JOINING SECTIONS OF CONCRETE SLABS OR METAL PIECES, CAULKING COMPOUNDS AND SEALANTS FOR PREVENTING WATER LEAKAGE, AND WATERPROOFING COMPOUNDS AND CONSTRUCTION COATINGS FOR PREVENTING WATER OR MOISTURE SEEPAGE
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