Mark Identification

DURATHERM

Serial Number

73771408

Filing Date

Dec 27, 1988

Trademark by

M-I DRILLING FLUIDS COMPANY

Classification Information

TECHNICAL CONSULTING SERVICES IN THE FIELD OF OIL AND GAS WELL DRILLING OPERATIONS, NAMELY FOR DRILLING FLUIDS AND DRILLING FLUIDE USE, DRILLING FLUID FORMULATIONS FOR HIGH TEMPERATURE WELLS AND SELECTION OF SPECIALIZED CHEMICALS FOR SUCH USE

Computer and Scientific