73258107
Apr 14, 1980
Oct 27, 1981
Non-Metallic Preparations (Not in the Nature of Paint) for Use in the Cementing and Filling Cracks Cavities and the Like Defects in Surfaces and for Use as Surfacing Material on Walls, Floors, Roofs and the Like, Non-Metallic Preparations for Joining Building Blocks and the Like
Nonmetallic Building Materials