Trademark Overview
On Thursday, September 17, 1942, a trademark application was filed for DAR-KOL with the United States Patent and Trademark Office. The USPTO has given the DAR-KOL trademark a serial number of 71455593. The federal status of this trademark filing is EXPIRED as of Friday, January 10, 1986. This trademark is owned by RICHARD E. HOUSER. The DAR-KOL trademark is filed in the Lubricant & Fuel Products category with the following description:
OILS, HAVING RUST, CORROSION, AND GUM DISSOLVING PROPERTIES, CLEANING PROPERTIES, AND ALSO USED AS LUBRICANTS AND PENETRANTS