72191421
Apr 17, 1964
Jul 27, 1965
CORROSION INHIBITORS AND WAX SOLVENTS-NAMELY, AROMATIC HYDROCARBONS, SURFACE ACTING AGENTS HAVING A DETERGENT EFFECT, AND CARBON BISULFIDE FOR DEWAXING OR SOLUBILIZING THE PRECIPITATED OR ACCUMULATED WAXES IN PETROLEUM STORAGE TANKS, PUMPING SYSTEMS AND OIL WELL BORES
Metal Goods