Mark Identification

ENERTECH

Serial Number

73213355

Filing Date

Apr 27, 1979

Registration Date

Jul 7, 1981

Trademark by

ENERTECH ENGINEERING AND RESEARCH CO.

Classification Information

Engineering Services-Namely, Design of Drill String, Tubing, Casing and Well Completion Equipment for the Petroleum Industry and for Computing Services-Namely, Software Programs for Thermal Simulation and Stress Analysis in Conjunction with Subsurface Conditions in the Petroleum Industry

Computer and Scientific