Trademark Overview
On Friday, March 10, 1961, a trademark application was filed for D.F.S.-1000 with the United States Patent and Trademark Office. The USPTO has given the D.F.S.-1000 trademark a serial number of 72115329. The federal status of this trademark filing is EXPIRED as of Tuesday, August 11, 1987. This trademark is owned by FUELS RESEARCH CORPORATION. The D.F.S.-1000 trademark is filed in the Lubricant & Fuel Products category with the following description:
GASOLINE AND DIESEL FUEL SUPPLEMENT