U.S. federal trademark · Serial No. 78795493 · Reg. No. 3620982
Reference books, bulletins, and printed instructional, educational and manuals in the field of oil and gas featuring mathematical computations relating to cementing tables, wellbore geometry, dimensions and strengths of pipe burst and pressure ratings, performance properties of casing, tubing, and drill pipe, and coupling displacement all for performing engineering calculations; reference charts in the field of oilfield operations
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