SPERRY DRILLING
Mark Identification

SPERRY DRILLING

Serial Number

77164986

Filing Date

Apr 25, 2007

Registration Date

Apr 1, 2008

Trademark by

HALLIBURTON ENERGY SERVICES INC.

Classification Information

Directional and pressure surveying instruments and tools, namely, computer hardware, logging, monitoring, planning, orienting and data analysis measuring instruments for use in oil and gas well drilling operations, borehole electronic sensors for gathering borehole seismic data, electronic gauges used to track the volume of borehole fluid, testers used to determine oil, water, and gas rates and to evaluate well production performance, and inspection instruments for use in boreholes and in oil, gas, water, and geothermal wells for determining and adjusting calibration measurements in the borehole, and computer software used for gathering real-time data from the wellbore and for database management, all for use in oil, gas, water, and geothermal well drilling operations

Electrical and Scientific Apparatus