71113225
Sep 18, 1918
Sep 14, 1920
A LIQUID PREPARATION TO BE INCORPORATED WITH OR APPLIED TO CEMENT AND CONCRETE FOR THE PURPOSE OF CONTROLLING AND ACCELERATING ITS SETTING; INCREASING ITS HARDNESS, TENSILE STRENGTH, AND DURABILITY; RENDERING THE RESULTING PRODUCT IMPERVIOUS TO WATER, AND PREVENTING ITS FREEZING DURING WINTER CONSTRUCTION
Vehicles