Mark Identification

ENERGY AT WORK

Serial Number

75849993

Filing Date

Nov 17, 1999

Trademark by

CHESAPEAKE ENERGY CORPORATION

Classification Information

Drilling and pumping of oil and gas for wholesale supply to refiners and processors and accumulators for refiners and processors

Building Construction and Repair

Oil and gas exploration for the purpose of locating, drilling and pumping oil and gas for wholesale supply to refiners and processors and accumulators for refiners and processors

Computer and Scientific