Filed: July 21, 1926 REFINED SEMIREFINED, AND UNREFINED OILS MADE FROM PETROLEUM, BOTH WITH AND WITHOUT ADMIXTURE OF ANIMAL, VEGETABLE, OR MINERAL… Serial Number:71234878
Filed: July 15, 1926 FLUID SEPARATORS OF THE FIXED TYPE WITHOUT MOVING PARTS FOR PURIFYING OR SEPARATING RAPIDLY-MOVING FLUIDS, SUCH AS OIL,… Serial Number:71234559