Metal floating covers and metal floating covers consisting in part of plastic and wood, all for covering liquids in open or closed receptacles, namely tanks for storage or transportation, cisterns, silos, pools at treatment plants and ditches; metal covers consisting in part of plastic and wood, for covering liquids in open or closed receptacles, namely tanks for storage or transportation, cisterns, silos; metal covers consisting in part of plastic and wood, to shade and lag receptacles, name...

FLOATING COVERS OR SURFACES FOR USE IN LIQUID STORAGE TANKS FOR THE PREVENTION OF EVAPORATION OF LIQUIDS THEREIN