Trademark Overview
On Wednesday, June 10, 1953, a trademark application was filed for SANDTROL with the United States Patent and Trademark Office. The USPTO has given the SANDTROL trademark a serial number of 71648538. The federal status of this trademark filing is EXPIRED as of Monday, May 8, 1995. This trademark is owned by DOWELL INCORPORATED. The SANDTROL trademark is filed in the Construction & Repair Services category with the following description:
WELL TREATING SERVICE-NAMELY, INJECTION OF A SAND SUSPENSION INTO THE WELL AT A PREDETERMINED POINT TO PACK THE FORMATION AGAINST SLOUGHING AND SHIFTING