74178921
Jun 21, 1991
Dec 14, 1993
castable refractory mixes in both dry and wet form; refractory [ cements, ] concretes and [ MOTARS ] [ * MORTARS * ] FOR STONE WORK; [ BRICKS ] AND THE LIKE MADE FROM REFRACTORY [ CEMENTS, ] CONCRETES [ AND MORTARS ]
Nonmetallic Building Materials