U.S. federal trademark · Serial No. 75066432 · Reg. No. 2057054
oil and gas well equipment, namely, lock mandrels used to positively locate and connect other devices in a wellbore, landing nipples used to provide distinct locations for locks to land in a wellbore, flow control devices used to control flow of fluids in a wellbore, equalizing assemblies used to equalize pressure above and below a plug installed in a wellbore, and running assemblies used to transfer tools into and out of wellbores
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