72019961
Nov 27, 1956
Oct 1, 1957
CHEMICAL PREPARATIONS-NAMELY, MINERAL OIL EMULSIONS AND DE-EMULSIFIERS; EMULSIFIERS FOR FATTY AND MINERAL OILS, SOLVENTS, AND WAXES; OIL WELL DRILLING MUD ADDITIVES; PROTECTIVE AGENTS AND SCALE PREVENTATIVES FOR OIL WELL TUBING
Metal Goods