GULFWAY CHEMICAL COMPANY, INC. Trademarks
MASTERSEAL
Filed: November 12, 1991
drilling fluid additives for control of lost circulation, differential pressure, filtrates and spurt loss
Owned by: GULFWAY CHEMICAL COMPANY, INC.
Serial Number: 74221505
MASTERSEAL
Filed: February 1, 1994
drilling fluid additives for control of lost circulation, differential pressure, filtrates and spurt loss
Owned by: GULFWAY CHEMICAL COMPANY, INC.
Serial Number: 74485187
