U.S. federal trademark · Serial No. 87158130 · Reg. No. 2114044
Metal wellbore centralizers for maintaining the position of a tubular member within the borehole of an oil and gas well for use in oil and gas exploration, drilling of bore holes and production of oil and gas; and metal centralizer stop collar locks for maintaining the position of the centralizer in connection with casing, pipes or tubes in boreholes for use in oil and gas exploration, drilling of bore holes and production of oil and gas
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